We compare travel eSIM brands for the United Kingdom on coverage, speed, reliability, the British network each one rides, unlimited availability, and fair use policy. No brand can pay to rank higher.
HelloRoam is Simscanner's top-ranked travel eSIM for the UK, with the cheapest sourced entry we tracked from $2.84. Vodafone and Three merged into VodafoneThree in 2025, and EU-style free roaming no longer applies by default.
Modelled estimates. Brand winner appears after verification. Network and KYC facts are sourced below.
Brands ranked on coverage, speed, reliability, host-network quality, unlimited and FUP transparency, and review signals. Independent comparison. No brand can pay to rank higher.
Compact overview. See the full comparison below for coverage, speed, reliability, FUP, hotspot, local networks, and review signals.
| Brand | Overall | Coverage | Speed | Unlimited |
|---|---|---|---|---|
HelloRoam |
92 |
91 |
94 |
Yes |
Airalo |
89 |
90 |
88 |
No |
Holafly |
90 |
88 |
90 |
Yes |
Nomad |
87 |
90 |
86 |
Yes |
Saily |
89 |
90 |
93 |
Yes |
Ubigi |
84 |
83 |
86 |
Yes |
84 |
84 |
85 |
Yes |
Scroll horizontally to see every signal. Brand column stays in view.
| Brand | Rank | Overall | Coverage | Speed | Reliability | Unlimited | FUP / fair use | Hotspot | Local networks | Review signal | Confidence | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
HelloRoam |
1 | 92 |
91 |
94 |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | Allowed | T-Mobile UK · 3 · O2 | 4.4 | Verified | See brand → Visit HelloRoam ↗ | |
Airalo |
3 | 89 |
90 |
88 |
No | No unlimited UK local plan | Allowed | EE | 4.3 | Secondary | See brand → Visit Airalo ↗ | |
Holafly |
2 | 90 |
88 |
90 |
Yes | High-speed ~90 GB/month | Allowed (share ≈1 GB/day) | Orange · T-Mobile · H3G · O2 · Vodafone UK | 3.6 | Verified | See brand → Visit Holafly ↗ | |
Nomad |
5 | 87 |
90 |
86 |
Yes | High-speed 2 GB/day | Allowed | Three · O2 · Vodafone UK | 4.2 | Secondary | See brand → Visit Nomad ↗ | |
Saily |
4 | 89 |
90 |
93 |
Yes | High-speed 5 GB/day | Allowed | Orange · T-Mobile | 4.0 | Secondary | See brand → Visit Saily ↗ | |
Ubigi |
6 | 84 |
83 |
86 |
Yes | High-speed 60 GB (30-day plan) | Allowed (data sharing) | EE · Three | 4.1 | Verified | See brand → Visit Ubigi ↗ | |
| 7 | 84 |
84 |
85 |
Yes | High-speed 3 GB/day | Allowed | EE · Three · Vodafone UK | 3.9 | Secondary | See brand → Visit Jetpac ↗ |
A travel eSIM brand is not a network. It resells capacity on a host network, and that host decides your actual coverage, rural reach, and 5G availability. The United Kingdom has four mobile network operators (MNOs) that own their own infrastructure.
| UK network (MNO) | Parent / ownership | Notes | Source |
|---|---|---|---|
| EE | BT Group | The UK's largest mobile network by coverage. Carries the legacy Orange and T-Mobile UK spectrum. | Wikipedia 234xx |
| O2 | Virgin Media O2 (Telefónica / Liberty Global) | Long-standing UK network, widely resold by MVNOs such as Tesco Mobile, Giffgaff, and Sky Mobile. | Wikipedia 234xx |
| Vodafone | VodafoneThree (Vodafone Group) | Merged with Three UK in June 2025 to form VodafoneThree; still sold as the Vodafone consumer brand. | Wikipedia, VodafoneThree |
| Three | VodafoneThree (formerly CK Hutchison) | Now part of the VodafoneThree joint venture; still sold as the Three consumer brand during integration. | Wikipedia, VodafoneThree |
| Brand | Connected network | 4G / 5G | Main cities | Rural confidence | Source | Confidence |
|---|---|---|---|---|---|---|
HelloRoam |
T-Mobile UK · 3 · O2 | 5G/4G | Strong across major cities | Rural: Good | helloroam.com | Verified |
Airalo |
EE | 4G/5G | Solid in the main cities | Rural: Medium | esimdb.com | Secondary |
Holafly |
Orange · T-Mobile · H3G · O2 · Vodafone UK | 4G LTE/5G | Good metro coverage | Rural: Medium-high | holafly.com | Verified |
Nomad |
Three · O2 · Vodafone UK | 4G/5G | Good metro coverage | Rural: Medium-high | esimdb.com | Secondary |
Saily |
Orange · T-Mobile | 4G/5G | Wide urban reach | Rural: High | esimdb.com | Secondary |
Ubigi |
EE · Three | 4G/5G | Solid in the main cities | Rural: Medium | ubigi.com | Verified |
| EE · Three · Vodafone UK | 3G/4G/LTE/5G | Strong across major cities | Rural: Good | jetpacglobal.com | Secondary |
KYC means know your customer: the identity check some countries demand before a SIM or eSIM can be activated. The rule differs sharply across Europe, so it is worth stating plainly for the UK.
The United Kingdom sits in Europe, sharing a land border (Northern Ireland with the Republic of Ireland) and short sea crossings to France, Belgium and the Netherlands. Yet for a traveller it behaves differently from the EU mainland. Since leaving the European Union, the UK is outside the EU "roam like at home" rules, so a SIM or eSIM bought in France or Ireland no longer guarantees surcharge-free use across the Channel, and several UK networks have re-introduced daily roaming fees for trips the other way.
Three things set the UK apart from neighbours such as Ireland, France and Germany. First, its currency is the pound sterling (GBP), not the euro, so a UK plan is priced and billed in pounds. Second, like Ireland and the Netherlands the UK has no SIM registration, unlike some EU states that ask for ID. Third, the market consolidated in 2025 when Vodafone and Three merged, leaving the UK with four host networks regulated by Ofcom. For a travel eSIM, the practical question is which of those four networks the brand rides.
This table lists the data amount, validity, price, host network, hotspot rule, and top-up option for each brand's UK plans. Brand plan pricing changes constantly and is rendered live on each brand's own site, so Simscanner does not republish unverified prices. Every cell is shown as not stated until a value is sourced.
| Brand | Plan | Data | Validity | Price (GBP) | Host network | Hotspot | KYC | Top-up | Source |
|---|---|---|---|---|---|---|---|---|---|
| Airalo | Not stated | Not stated | Not stated | Not stated | Not stated | Not stated | None (UK) | Not stated | Not stated |
| Holafly | Not stated | Not stated | Not stated | Not stated | Not stated | Not stated | None (UK) | Not stated | Not stated |
| Nomad | Not stated | Not stated | Not stated | Not stated | Not stated | Not stated | None (UK) | Not stated | Not stated |
Many travel eSIMs label plans as unlimited, but apply a fair use policy that reduces speed after a daily or total allowance. The table below compares the allowance, throttle speed, and hotspot rule for each brand.
| Brand | Unlimited? | High-speed allowance | Throttle after FUP | Hotspot | Policy clarity | Notes | Source | Confidence |
|---|---|---|---|---|---|---|---|---|
HelloRoam |
Yes | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) | ~1 Mbps after ~6 GB/day (tested, US) | Allowed | Published no throttling; ~6 GB/day tested then ~1 Mbps (US) · ~1 Mbps after ~6 GB/day (tested, US) | helloroam.com | Verified | |
Airalo |
No | No unlimited UK local plan | n/a | Allowed | No unlimited UK local plan · n/a | esimdb.com | Secondary | |
Holafly |
Yes | High-speed ~90 GB/month | 256-1024 kbps | Allowed (share ≈1 GB/day) | High-speed ~90 GB/month · 256-1024 kbps | holafly.com | Verified | |
Nomad |
Yes | High-speed 2 GB/day | 512 kbps | Allowed | High-speed 2 GB/day · 512 kbps | esimdb.com | Secondary | |
Saily |
Yes | High-speed 5 GB/day | 1024 kbps | Allowed | High-speed 5 GB/day · 1024 kbps | esimdb.com | Secondary | |
Ubigi |
Yes | High-speed 60 GB (30-day plan) | 2 Mbps | Allowed (data sharing) | High-speed 60 GB (30-day plan) · 2 Mbps | ubigi.com | Verified | |
| Yes | High-speed 3 GB/day | 1024 kbps | Allowed | High-speed 3 GB/day · 1024 kbps | jetpacglobal.com | Secondary |
Speed in the UK varies by city and by the host network the eSIM connects to. The table below shows average download, upload, latency, and 4G or 5G availability per brand, scoped to a chosen city group.
| Brand | Avg download | Avg upload | Latency | 4G / 5G | City confidence | Reliability | Last reviewed |
|---|---|---|---|---|---|---|---|
HelloRoam |
86 Mbps | 25 Mbps | 29 ms | 5G/4G | High in main cities | Reviewed 15 Jun 2026 | |
Airalo |
72 Mbps | 21 Mbps | 36 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Holafly |
77 Mbps | 22 Mbps | 34 ms | 4G LTE/5G | High in main cities | Reviewed 15 Jun 2026 | |
Nomad |
67 Mbps | 19 Mbps | 39 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Saily |
84 Mbps | 24 Mbps | 30 ms | 4G/5G | High in main cities | Reviewed 15 Jun 2026 | |
Ubigi |
67 Mbps | 19 Mbps | 39 ms | 4G/5G | Good in main cities | Reviewed 15 Jun 2026 | |
| 64 Mbps | 19 Mbps | 40 ms | 3G/4G/LTE/5G | Good in main cities | Reviewed 15 Jun 2026 |
Aggregated public review signals from the App Store, Google Play, and Trustpilot, plus the themes travellers mention most often when reviewing each brand in the UK. We do not invent ratings.
Aggregate appears once at least 50 verified reviews are recorded per brand for the UK.
Different travellers need different things. These verdicts appear once the ranking, network, FUP, speed and review data above is verified.
Top brand on the blended UK score across coverage, speed, reliability, and FUP transparency.
Widest reach across the UK including rural Scotland and Wales, scored from local-network coverage data.
Highest average download in major UK cities, scored from public network performance data.
Largest high-speed allowance with a clearly published FUP throttle rule.
Allows hotspot or tethering on its main UK plans with no surprise restrictions.
Lowest latency, highest reliability score, and clearest support and refund signals.
Easy multi-device setup and a clear FUP that survives heavy household use.
Each brand is scored on seven inputs. Coverage and local-network quality come from public network sources. Speed and reliability come from public network performance sources. Review and FUP signals are taken from public brand and store sources. No brand can pay to rank higher.
Public local-network coverage data, mapped per nation and region of the UK.
Public network performance sources, scoped to UK cities.
Drop-off, time-to-connect, and uptime signals from public sources.
Clarity of allowance, throttle speed, and hotspot rules on each plan.
Whether hotspot and tethering are allowed and on which UK plans.
Which UK network the brand connects to and the network grade.
App Store, Play Store, and Trustpilot signals, weighted by recency.
Source quality, recency, and number of verified inputs per brand.
One accordion per brand. Coverage, speed, FUP, hotspot, local networks, reviews, strengths, weaknesses, and data confidence. Click to expand.
HelloRoam is a UK-based travel eSIM (operated by Future Syncs Ltd) tracked across 185+ countries. Its local plan here starts at $2.84 on T-Mobile UK / 3 / O2, with hotspot included at no extra charge. Plans and networks are sourced; performance scores are modelled estimates.
From $2.84 for 1 GB / 7 days. 1GB/7d $2.84 · 10GB/30d $15.93 · Unlimited daily.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance Published no throttling; ~6 GB/day tested then ~1 Mbps (US), throttle ~1 Mbps after ~6 GB/day (tested, US).
Hotspot / tethering: Allowed.
Connects to T-Mobile UK · 3 · O2 (5G/4G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Verified plans sourced 02 Jun 2026 · scores modelled
One of the largest travel eSIM brands by country coverage. UK plans connect to a British mobile network and are sold in fixed-data and unlimited tiers.
From $4.00 for 1 GB / 3 days. 1GB/3d $4 · 5GB/7d $12 · 50GB/30d $49.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
No unlimited UK plan; fixed-data plans only.
Hotspot / tethering: Allowed.
Connects to EE (4G/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Secondary plans sourced 02 Jun 2026 · scores modelled
Known for unlimited day-pass plans across many destinations. The UK offer focuses on unlimited use with a fair use policy.
From $11.70 for Unlimited / 3 days. Unltd 3d $11.70 · 15d $50.90 · 30d $74.90.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance High-speed ~90 GB/month, throttle 256-1024 kbps.
Hotspot / tethering: Allowed (share ≈1 GB/day).
Connects to Orange · T-Mobile · H3G · O2 · Vodafone UK (4G LTE/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Verified plans sourced 02 Jun 2026 · scores modelled
Travel eSIM brand with multi-tier plans. The UK offer includes fixed-data plans and a regional Europe option.
From $4.50 for 1 GB / 7 days. 1GB/7d $4.50 · 10GB/30d $17 · 50GB/30d $39 · Unltd/30d $49.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance High-speed 2 GB/day, throttle 512 kbps.
Hotspot / tethering: Allowed.
Connects to Three · O2 · Vodafone UK (4G/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Secondary plans sourced 02 Jun 2026 · scores modelled
Travel eSIM operated alongside a wider security product. The UK offer is sold in fixed-data plans.
From $4.49 for 1 GB / 7 days. 1GB/7d $4.49 · 10GB/30d $18.99 · Unltd/7d $28.99 · Unltd/30d $71.99.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance High-speed 5 GB/day, throttle 1024 kbps.
Hotspot / tethering: Allowed.
Connects to Orange · T-Mobile (4G/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Secondary plans sourced 02 Jun 2026 · scores modelled
Travel eSIM brand backed by a global telecoms parent. Sells fixed-data UK plans and a regional option.
From $11.00 for 10 GB / 30 days. 10GB/30d $11 · Unltd/7d $22 · Unltd/30d $44.
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance High-speed 60 GB (30-day plan), throttle 2 Mbps.
Hotspot / tethering: Allowed (data sharing).
Connects to EE · Three (4G/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Verified plans sourced 02 Jun 2026 · scores modelled
Travel eSIM brand built for short trips. UK plans focus on fixed-data and short validity.
From $10.00 for 10 GB / 30 days. 10GB/30d $10 · 40GB/30d $29.99 · Unltd (3 GB/day).
UK coverage shown is a modelled estimate.
Speed shown is a modelled estimate.
Unlimited UK plan available. High-speed allowance High-speed 3 GB/day, throttle 1024 kbps.
Hotspot / tethering: Allowed.
Connects to EE · Three · Vodafone UK (3G/4G/LTE/5G). UK networks tracked: EE, O2, Vodafone, Three.
Review signals shown are a modelled estimate.
Weakness notes shown are a modelled estimate.
Secondary plans sourced 02 Jun 2026 · scores modelled
Common traveller questions answered directly. Full FAQ content stays in the HTML so search and AI crawlers can read it.
No. The United Kingdom does not require ID or passport registration to buy or activate a prepaid SIM or eSIM. The UK is explicitly listed among countries that decided against mandatory SIM registration, so a UK travel eSIM can be bought and activated online with no identity document. See the sources list below.
The UK has four mobile networks: EE (BT Group), O2 (Virgin Media O2), Vodafone and Three. Vodafone UK and Three UK merged into VodafoneThree in 2025. A travel eSIM resells capacity on one of these four. Which brand rides which network is mapped in the local-networks table above, and is verified per brand.
Not by default. The UK left the EU, so it is outside the EU "roam like at home" rules. An EU SIM may add daily roaming charges in the UK, and several UK networks now charge to roam into the EU. A UK-specific travel eSIM avoids this by being priced for UK use from the start.
The United Kingdom uses the pound sterling (GBP), not the euro. UK plans are priced and billed in pounds. Some travel eSIM brands display prices in US dollars or euros and convert at checkout, so check the currency before you pay. Per-brand UK prices on this page are shown as not stated until each is sourced.
An eSIM is usually faster to set up than a physical SIM from an airport kiosk and can be activated before you land. Because the UK has no SIM registration, neither option needs ID, so the choice comes down to convenience and price. Physical SIMs can offer larger local allowances; eSIMs avoid the queue.
Coverage depends on which of the four networks (EE, O2, Vodafone, Three) a travel eSIM connects to, and longer-established networks tend to reach further into rural Scotland and Wales. Simscanner publishes a modelled carrier-coverage comparison for UK in the table on this page.
Every factual claim about UK networks, SIM registration, currency and language on this page is cited below with the date we retrieved it. Brand plan pricing is intentionally not sourced here and stays pending.
| # | Claim supported | Source | Retrieved |
|---|---|---|---|
| 1 | The UK's four mobile network operators (EE, O2, Vodafone, Three). | Wikipedia, Mobile network codes in ITU region 2xx (Europe), UK 234xx | 30 May 2026 |
| 2 | Vodafone UK and Three UK merged into VodafoneThree (June 2025). | Wikipedia, VodafoneThree | 30 May 2026 |
| 3 | The UK has no mandatory prepaid SIM registration. | GSMA Mobile Policy Handbook, mandatory registration of prepaid SIMs | 30 May 2026 |
| 4 | The UK is listed among countries without mandatory SIM registration. | Privacy International, timeline of SIM card registration laws | 30 May 2026 |
| 5 | Capital (London), currency (pound sterling, GBP) and language (English). | Wikipedia, United Kingdom | 30 May 2026 |
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