100Mb broadband: Which deals are best?

Most providers now offer 100Mb broadband deals through full fibre to the home connections using either the Openreach network or their own independent network.

It's the most popular plan of choice for those moving to full fibre broadband, with a take-up rate of 39% where full fibre is available.

Unsurprisingly then, 100Mb broadband is also one of the most affordable broadband speeds too, with prices from just £25 per month on a nationwide basis.

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At a glance: Best 100Mb broadband

The best 100Mb broadband deal will depend on a household's individual requirements and their location, which will determine the full fibre networks available to them.

For the best 100Mb deals though, we've selected our top four categories and which provider wins below:

Broadband speeds of 100Mb now reach nearly 90% of the UK according to Thinkbroadband, with Ofcom reporting as many of 25 million homes can now move to full fibre broadband.

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Verdict: Who offers the best 100Mb broadband?

Different broadband providers come out on top when we look at availability, price, reliability and premium features. So, there's plenty of room in the market for households to find a 100Mb broadband deal that suits their needs.

Here are some of the best 100Mb broadband deals available in the UK today:

• Onestream - one of the cheapest 100Mb deals available at just £24.95 per month, with availability across the entire Openreach FTTP network of 19.2 million premises
• Plusnet (or any Openreach provider, inc. BT, Sky, Vodafone) - the most widely available 100Mb broadband in the UK, now passing over 19.2 million homes
• Sky - the provider with the best customer service record offering a 150Mb deal with a WiFi 6 router on the Openreach network to over 19.2 million premises
• Vodafone - their Pro 3 150Mb deal offers the most advance WiFi 7 router with a whole home WiFi guarantee and automatic 4G backup

Availability is likely to be the main factor when choosing from the providers listed above however, or any full fibre provider for that matter, with only around 7 million premises able to choose from two or more full fibre networks so far.

Ultrafast broadband speeds

We look at packages with average download speeds between 100Mb and 150Mb per second in this guide, as many providers have opted to increase the speed of their entry-level ultrafast package.

While there has previously been controversy around advertised broadband speeds and actual real-world speeds, current advertising regulation means that at least 50% of customers must receive the headline speed at peak times (between 8pm and 10pm).

One further point: 100Mb broadband is now defined as 'superfast' by Ofcom, following a change in terminology back in 2015. Yet, despite this, and rather confusingly so, the Government has a separate definition of ultrafast which does include 100Mb.

In practice, we see many 100Mb packages labelled as superfast by some providers and ultrafast by others. Our advice is always to double-check the average download (and upload) speeds and what technology is used for the connection (look for full fibre) to really understand how fast the broadband line will actually be.

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Cheapest 100Mb broadband

Of the major broadband providers with nationwide availability, Onestream currently has the cheapest price on their Full Fibre 115 plan, at just £24.95 per month with a router, or £20 per month if a customer wants to supply their own router.

While the cheapest 100Mb plans are offered by budget providers like Onestream, NOW Broadband, Plusnet, and Vodafone, bigger providers including Virgin Media, Sky and BT are also worth comparing on costs.

Those looking for a more ethical option could consider 100Mb broadband deals from Your Co-op, while Rebel Internet and Fibrely both offer nationwide availability with a smaller company ethos.

Plusnet, Vodafone, Virgin Media, and Sky, are all nationally available providers with low-cost 100Mb+ deals, although prices are generally around the £25 to £30 per month mark.

The entry-level full fibre plans from Plusnet, Vodafone, Sky, TalkTalk and BT also offer average download speeds around 150Mbps, while the cheaper plans from Onestream and NOW Broadband offer 100Mbps.

Cheap independent network providers

Smaller full fibre providers are also worth considering when searching for affordable 100Mb broadband deals.

These providers are often dedicated to rollouts within certain areas or on a town-by-town basis. To set them apart from the big-name rivals they are usually competitively priced.

Use our free broadband tool to find out what's available in your area.

For example, Community Fibre who have availability exclusively in London and the South East, offer a 150Mb Fibre Broadband package for just £15 per month.

Other options include 4th Utility, Quickline, Hey! Broadband, Brsk, Gigaclear, Fibrus, and BeFibre, who all offer 100Mb+ plans for under £25 per month.

Full fibre broadband providers are becoming increasingly keen to encourage customers to upgrade from superfast fibre to the cabinet and copper broadband connections to the ultrafast speeds offered by full fibre.

Competition between networks, especially those trying to established themselves in a new area, also pushes the price down for entry-level 100Mb plans.

The closure of the copper phone line network, which is often used for superfast broadband delivery, is due to close in 2025. So, BT Group have also reduced the wholesale price of full fibre, while simultaneously making copper products less attractive in a bid to prompt customers to upgrade.

Learn more about the cheapest broadband deals in the UK, and the best provider for fibre broadband.

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Most widely available 100Mb broadband

Any provider using the Openreach network to deliver full fibre to the home broadband now offers the most widely available 100Mb+ service, covering over 19.2 million premises across the UK, or 60% of homes.

BT, Plusnet, Sky, Vodafone, TalkTalk, and NOW Broadband all offer 100Mb or 150Mb broadband deals to around 60% of UK homes through Openreach.

Here are the current best prices for this options:

Virgin Media is also a good choice for wide availability with their network now passing over 18.5 million premises, also around 60% of the UK.

M125 Fibre Broadband can be taken with or without a home phone line, however the broadband only deal is currently the cheapest option. Customers can also bundle a Virgin Media TV service if they wish, including the contract-free Virgin Flex plan from just £5 per month.

Virgin Media are currently mostly active in more urban and suburban areas, although they do plan to expand their network to a further 7 million homes by the end of 2026.

To find out if Virgin Media is available in your area, check your postcode in the tool below:

Read more about Virgin Media's availability in our guide, or read about their innovative Volt bundles which combine the services of Virgin Media with O2 mobile plans for great savings.

Other nationwide 100Mb options

Sky, Vodafone and TalkTalk all offer 100Mb broadband through both Openreach and CityFibre, meaning they cover an additional 4.4 million premises compared to BT (although some homes may overlap).

Sky Full Fibre 150 comes with the new WiFi 6 enabled Sky Max Hub, and customers can add the Sky Max WiFi guarantee with boosters for just £4 per month extra.

Vodafone also provide customers with a WiFi 6 router as standard, whilst also giving them the choice of upgrading to a WiFi guarantee with their Super WiFi plan for an extra £8 per month, or even their Pro 3 broadband for a WiFi 7 router and automatic 4G broadband back-up.

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Best customer service 100Mb broadband

Sky are the best 100Mb broadband provider for customer service, and offer the Sky Full Fibre 150 package for just £25 per month for 24 months.

Coming first in our guide to the best broadband providers for customer service, Sky consistently have the lowest complaint records according to independent research by Ofcom, as well as the highest satisfaction levels among customers for complaints handling.

As well as having the fewest number of complaints, Sky customers are also least likely to have a reason to complain in the first place according to Ofcom surveys.

In Ofcom's latest Comparing Customer Service report, Sky was also one of three providers that customers were more likely to recommend to a friend, along with Plusnet and EE.

Sky currently offers full fibre broadband through the Openreach fibre to the home network, which so far passes 19.2 million premises, and is on track to reach 25 million premises by the end of 2026, likely making the network the biggest in the UK.

Customers living in CityFibre enabled areas, can also now get Sky broadband, including with speeds up to 2.5Gb and 5Gb.

Read more about the best providers for customer service.

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Best premium 100Mb broadband

For customers who want a more premium 100Mb broadband service, for example for those working from home, or more active Internet homes, there are two note-worthy options: Vodafone Pro 3 Full Fibre 150 and BT Full Fibre 150.

Here is the current pricing of the plans:

Both deals are available on 24-month contracts and offer a range of premium extras alongside the 100Mb broadband deal, including a whole home WiFi guarantee.

Vodafone Pro 3

Vodafone's latest Pro 3 offering brings a range of additional features to their home broadband deals, including:

• Advanced WiFi 7 router
• Super WiFi guarantee for whole home WiFi with WiFi 7 boosters
• Automatic 4G broadband back-up
• Secure Net Home security suite

Customers who combine broadband and mobile services will also be eligible for the Vodafone Together discount of up to £4 per month.

BT Full Fibre

BT offer most of their premium features in add-ons customers can add to their package. However, all BT broadband packages come with the following additional features:

• BT Virus Protect powered by Norton
• Access to Home Tech Experts (chargeable)
• BT Parental Controls, including router level control
• BT Call Protect, for users with a home phone line

Customers can then choose to add:

• Complete WiFi for a whole home WiFi guarantee, for £10/pm extra
• Hybrid Connect for a 4G back-up solution provided by EE, for £7/pm extra

It's also possible for existing BT customers to access these extras through the BT Halo 3 and BT Halo 3+ add-ons.

While these add-ons increase the price of BT Full Fibre they offer similar features to that of Vodafone Pro II broadband.

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Is 100Mb broadband fast enough?

The median average download speed in the UK is now 223Mb according to Ofcom research published in December 2024.

Ofcom's latest Connected Nations report puts coverage of 100Mb+ broadband at 83% of the UK, and take-up of full fibre broadband thought to be around 35%.

Either way, despite the fact 100Mb broadband will soon become the base line norm in the UK as the entry-level full fibre speed, there is still a majority of homes who can access faster speeds but are yet to do so.

However, where people do upgrade to full fibre, Ofcom has reported 39% of all customers choose a 100Mb package, with just 17% opting for the fastest gigabit deals.

This suggest 100Mb is more than adequate in terms of download speed for the majority of households, especially where customers are making the move to full fibre for the first time.

Overall, full fibre is better equipped at delivering stable and reliable broadband connections, with fewer disconnections, faster latency, and is unaffected by distance from the nearest telecoms cabinet or exchange.

G.fast 100Mb broadband

It's worth noting here there are some broadband deals available that exceed 100Mb in download speed but are delivered using the older fibre to the cabinet (FTTC) technology.

G.fast, once seen as the future of UK broadband, is available on the Openreach FTTC network and boosts a standard FTTC connection at the cabinet. This means it can deliver faster speeds of up to 350Mb, compared to the usual headline 60-70Mb.

While BT themselves no longer sell it, it's currently still available from providers including TalkTalk and Sky. It's usually sold in a package offering average download speeds of 150Mb, but TalkTalk also offer a 250Mb plan.

G.Fast is only available to just under 2 million premises across the UK, so it's already been overtaken by the full fibre rollout by quite some distance. It's also very unlikely to be further expanded now BT have set their sights on full fibre and are closing the copper phone line network G.fast relies upon.

Overall, where available a 100Mb full fibre connection is likely going to be more stable and reliable than a 100Mb G.Fast connection.

Faster than 100Mb

For people looking for even faster speeds than 100Mb broadband, they have plenty of options available to them, with gigabit broadband now reaching 89% of the UK.

And in fact, wherever 100Mb is available, it's likely faster speeds of up to 900Mb-1Gb will be available too, albeit for a higher cost.

Virgin Media, for example, also offer M250, M350, M500 and Gig1 broadband packages. Likewise, even budget providers such as Plusnet offer a gigabit-capable connection.

100Mb is increasingly seen as a bridging option to encourage customers to take-up ultrafast and full fibre broadband connections, so this is likely to continue as the sweet-spot for the most competitive pricing.

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Summary: Plentiful 100Mbps broadband options

100Mbps broadband is more widely available than ever before thanks to rollouts from Openreach, Virgin Media, and other networks including CityFibre, Community Fibre in London, and Gigaclear in more rural areas.

Well over two thirds of households around the UK are now able to access speeds of 100Mb or more, with as many as 7 million premises having a choice of more than one fibre network.

Here's a quick recap of our chosen 100Mb broadband providers:

• Onestream, NOW Broadband, Plusnet and Vodafone have the best prices nationwide, while Community Fibre is a great option in London
• Openreach and Virgin Media both have the widest availability covering over 60% of the UK, with coverage now reaching both rural and urban areas
• Sky are the best provider for service with the lowest complaints in the UK market according to regulator Ofcom
• Vodafone Pro 3 offers one of the most premium broadband packages around, with automatic 4G back-up, a whole home WiFi guarantee, and an advanced WiFi 7 router

Overall, the top choice of 100Mb broadband will depend on individual requirements, with Onestream could be a great option for those on a budget, while Vodafone offers some of the best premium features, and many others fall somewhere in between.

Read more about ultrafast broadband and gigafast broadband in our guides.