Best 100GB Data Plans UK: Our #1 Picks For 2023 


Best 100GB Data Plan UK (1)Pin

Here’s a selection of the best 100GB data plans in the UK right now, covering all the major phone networks and a few choice MVNOs for good measure…


TL;DR: Key Takeaways:

  • Consider Your Data Needs: Unlimited data plans may seem attractive, but they’re not necessary for everyone. Most people don’t come close to using the data offered in these plans. If you’re looking to save money, consider a plan with a sizable data allowance that suits your usage.
  • Three’s 120GB Standard Plan: This plan offers 120GB of data per month for £16. It includes both 5G and 4G, and comes with Three+ Rewards, making it a great value for money.
  • Vodafone Red 160GB Plan: This plan offers 160GB of data per month for £23. It includes both 5G and 4G, and unlimited calls and texts.
  • Best 100GB Plan: As of now, the best 100GB data plans in the UK are Three’s 120GB Standard plan and Vodafone’s Red 160GB plan. They offer plenty of data per month, are competitively priced, and both networks have excellent coverage in the UK. However, Three’s offer is cheaper and includes everything you need to run your phone without limiting your usage.
  • MVNO Networks Cost Even Less: If you want to pay even less for a 100GB of data, go with and MVNO network like SMARTY.

Sometimes, you don’t need unlimited everything. It costs more, for one, and, secondly, most people will never even get close to taking advantage of all the data up for grabs in most unlimited plans. 

Take Three’s unlimited plan, it’s completely unlimited with ZERO fair usage restrictions. If you were so inclined you could use 1000GB a month (and you’d still pay £25 per month for the data). 

If you’re looking to tighten up your belt in 2023, fiscally-speaking, one of the easiest ways to save a few quid on your phone-related expenses is to go for a sizable data allowance that isn’t unlimited but offers more than you’ll ever need on a month-by-month basis. 

For most people, this would be 100GB and up; in fact, anything over 100GB is going to be really hard to get through in an entire month. And, in the context of Three’s plans, the difference between its Unlimited Plan and its 100GB plan is around £11 a month which, over the course of a year, soon adds up. 

So, what are the best 100GB+ date plans in the UK right now? Here’s our pick of the best from the UK’s biggest and best retailers. I’ll outline our picks first for the top rated 100GB data plans and then, after that, explain how and why we choose them. 

Best 100GB Data Plans

Three

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Also Consider…

Three’s 250GB Standard Plan

This plan offers a whopping 250GB of data per month for £20 per month which is significantly more than many other plans on the market. This makes it an excellent choice for heavy data users who stream a lot of video, play online games, or use their phone as a hotspot.

The plan includes both 5G and 4G, ensuring you’ll have access to fast and reliable internet speeds wherever you are. This is particularly beneficial if you live in an area with 5G coverage, as you’ll be able to take full advantage of the ultra-fast speeds that 5G offers.

In addition to the generous data allowance and 5G access, this plan also includes Three+ Rewards.

What Are Three+ Rewards?

Three+ is a loyalty rewards app exclusive to Three customers. It’s Three’s way of saying thanks and helping their customers create more meaningful moments. The app offers exclusive rewards, discounts, and experiences.

Some of the benefits include amazing offers from brands customers love, like Cineworld, Caffè Nero, Uber Eats, and many more. Plus, it provides access to presale tickets to some of the UK’s biggest concerts and events.

The Three+ app is available now and free to download for all Three customers.

Analysis: Which is Best?

For overall data allowance and bang for your buck, you really cannot go wrong with Three’s 120GB Standard Plan. It includes all the data you’ll ever need for a price that, as of right now, cannot be beaten anywhere else; 16 quid for 120GB of monthly data (inc. 5G) is brilliant value whichever way you slice it.

If you think you need more, but don’t want to go fully unlimited, Three’s 250GB standard plan is slightly more expensive at £20 but compared to nearly everything else on the market in this range it is still very, very inexpensive.

Vodafone

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Also Consider…

Vodafone 160GB + 3 Xtra Benefits

This plan offers the same 160GB of data per month, 5G and 4G, and unlimited calls and texts as the Red 160GB Plan. However, it also includes three additional benefits:

  1. 6x Unlimited Data Boosters: These boosters can be activated whenever you need more data, providing flexibility and ensuring you’re never left without internet access.
  2. Device Care: This provides extra protection for your device, offering peace of mind in case of accidental damage.
  3. Unlimited Picture Messages: For those who love to share photos with friends and family, this feature removes any limitations on picture messaging.

Additionally, this plan includes inclusive roaming in 51 European destinations and 5G at no extra cost. But the plan itself is more expensive at £30 per month.

Analysis: Which is Best?

The basic Vodafone Red 160GB plan offers a generous 160GB of data per month, which should be more than enough for most users. It includes both 5G and 4G, ensuring fast and reliable internet speeds. Additionally, it offers unlimited calls and texts, making it a well-rounded package for regular mobile users.

The 160GB Plan + 3 XTRA plan offers the same 160GB of data per month, 5G and 4G, and unlimited calls and texts as the Red 160GB Plan but also includes three additional benefits. It is more expensive though (£30 vs £23 for the basic plan):

Three vs Vodafone: Which 100GB Plan is Best?

As of right now, our current picks for the best 100GB data plans in the UK are Three’s 120GB Standard plan and Vodafone’s Red 160GB plan. These no-frills data plans deliver plenty of data per month, are very competitively priced, and both Three and Vodafone have excellent coverage in the UK.

Me? I personally prefer Three’s offer; it’s cheaper and includes everything you need to run your phone however you like without limiting your usage at all. And the best bit? It only costs £16.

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Best of The Rest…

Here’s a quick overview of some of the other 100GB+ data plans we also really like. I’ve also included options for MVNO networks as they’re quite a bit cheaper than traditional phone networks. As of July 2023, these are some of the best 100GB+ plans you can buy right now.

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Latest Smartphone Releases


  • Xiaomi 15S Pro

    The Xiaomi 15S Pro didn’t come with a flashy launch, but it brings some seriously heavy hardware to the table. A custom 10-core chip, Leica-engineered cameras, and one of the brightest displays on the market

  • Samsung Galaxy S25 Edge

    At just 5.8mm thick, it’s one of the thinnest Android phones ever made—but don’t let the slim profile fool you. This phone is all flagship under the hood.

  • Nothing Phone (3a) Pro

    It’s got the same slick design and OLED display, but adds a periscope zoom camera and a 50MP front-facing shooter.

  • Nothing Phone (3a)

    The Nothing Phone (3a) nails the formula: give people what they actually want, keep the price low, and make it look cooler than anything else in its class.

  • Motorola EDGE 60 Pro

    With a bold design, flagship-like display, and surprisingly refined camera system, it’s one of the most interesting mid-range phones of 2025.

  • Google Pixel 9

    I’ve been using the Pixel 9 for a few weeks now, and honestly? It nails all the basics—and a bit more. Killer stuff all round!

  • Google Pixel 9 Pro

    I’ve used the Pixel 9 Pro as my daily device, and it’s hands-down the best balance of power, practicality, and photography you’ll find on Android right now.

  • OnePlus 13

    I’ve been using the OnePlus 13 as my daily driver for a few months now—and I’ve got to say, it’s easily one of the best Android phones I’ve tested this year.

  • Xiaomi 15 Ultra

    After using the Xiaomi 15 Ultra for over a week, I can confidently say: this phone is an absolute beast. It’s made for camera nerds, power users, and creators.

  • iPhone 16 Pro Max

    If you’ve been holding out for a truly complete iPhone, the 16 Pro Max delivers—hard. After using it daily, I won't be going back…

  • Google Pixel 9 Pro XL

    Big screen, big battery, and even bigger brains—this is the Pixel to get if you want Google’s best hardware and longest support.

  • Google Pixel 9a

    The Pixel 9a brings Google’s flagship-level smarts to a budget-friendly package, and it’s easily one of the best-value Android phones of 2025.

Best SIM-Only Plans & Deals


  • Boost Mobile Unlimited Premium Plan

    Boost’s top-tier option brings the heat: 50GB of premium data, hotspot, North America roaming, global talk & text, and $430 off select devices. All-in at $60/month with no contract.

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    Data: Unlimited (50GB premium speed)

  • Boost Mobile Unlimited+ Plan

    Level up with 40GB of premium data, hotspot access, global calling, and up to $300 in device savings. All for just $50/month. No contracts and flexible phone options included.

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    Data: Unlimited; Speed Caps After 40GB

  • Boost Mobile Unlimited Plan

    Start strong with 30GB of premium data, unlimited everything, and a killer intro offer: just $15/month for the first 3 months, then $25/month forever. No contracts. No fluff. Big value.

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    Data: Unlimited (Speed Caps Over 30GB)

  • iD Mobile 1 Month SIM-Only: 108GB

    Another high-data, low-cost option with no contract. 108GB for just £9, full 5G access, and the same goodies you get with 12-month deals.

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    Data: 108GB

  • iD Mobile 1 Month SIM-Only: 20GB

    The lowest price option. 20GB for £6 with all the same perks as pricier plans. Great if you don’t use much data and want to save every penny.

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    Data: 20GB

  • iD Mobile 1 Month SIM-Only: 110GB

    This plan gives you big data and zero commitment. 110GB for just £10 with all perks intact. If you need more data but want the freedom to cancel, this is the one.

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    Data: 110GB

  • iD Mobile 1 Month SIM-Only: 60GB

    More data, same price. For just £8/month, you get 60GB on a no-strings 1-month rolling plan. Ideal for users who stream often but don’t want long commitments.

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    Data: 60GB

  • iD Mobile 1 Month SIM-Only: 40GB

    Perfect if you want full flexibility. You get 40GB and all of iD Mobile's perks with no lock-in, annual increases, or setup fees. Great for short-term users.

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    Data: 40GB

  • iD Mobile 12 Month SIM-Only: 60GB

    One of the best pound-per-GB plans around. You get 60GB for £8 with £25 cashback, which means you’re effectively paying closer to £6/month. Includes roaming and data rollover.

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    Data: 60GB

  • iD Mobile 12 Month SIM-Only: 108GB

    This deal gets you a healthy 108GB of 5G data for less than a tenner, with no upfront costs and £24 cashback. All the perks are included too: data rollover, roaming, and loyalty rewards.

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    Data: 108GB

  • iD Mobile 12 Month SIM-Only: Unlimited Data

    This iD Mobile plan doesn’t just compete on price, it’s up there with the best of them. Unlimited everything, a year-long lock-in with no price rises, and £42 cashback straight to your pocket. It’s like getting nearly 3 months free.

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    Data: Unlimited, No Speed Caps

  • Mint Mobile 20GB Plan

    If you're looking to save some cash on your bills, this plan is an awesome option. You'll get 20GB of data per month and 20GB hotspot data allowance. For moderate to heavy users, that should be more than enough. I seldom use more than 10GB of data a month, and I'm always using my phone

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    Data: 20GB