DIGI Broadband: 5 Facts to Avoid a Costly Mistake

What is DIGI broadband and is it worth switching to?

DIGI broadband is a new full fibre network quietly building out across parts of Bedfordshire and Hertfordshire, and it’s worth a look if it happens to reach your street. The pitch is simple: full fibre speeds, no fixed contract, and none of the mid-contract price rises that have become the norm at bigger providers. DIGI launched its UK residential service in March 2026 through WhyFibre, a fibre network it took a 51% stake in the same month.

It’s small right now, covering somewhere over 10,000 premises, so most people reading this won’t be able to get it yet. But where it does reach, DIGI broadband is one of the cheapest full fibre deals on the market, and that’s worth knowing about even if you just want to see what “cheap” actually looks like these days.

DIGI broadband pricing: £15 to £25 a month

DIGI broadband starts at £15 a month for a symmetric 1Gbps connection, rising to £20 for 2.5Gbps and £25 for a genuinely fast 10Gbps package. All three tiers are symmetric, so upload speed matches download, and there’s no built-in annual price rise partway through.

That last point is the interesting bit. Most of the big broadband names now add a fixed £3.50 to £4 a month onto bills partway through the contract, on top of whatever headline price got you to sign up. A deal with no built-in rise is a genuinely different shape of contract, not just a cheaper one.

DIGI broadband coverage so far: a small commuter-belt footprint

Coverage so far sits in a commuter-belt pocket north of London, with reported availability in and around Houghton Regis, Luton, Letchworth, Hitchin, Stevenage, St Albans, Hemel Hempstead, Watford, Hertford and Hoddesdon. That’s a small, scattered footprint rather than a full town rollout, so being in one of these areas doesn’t guarantee your specific street is lit up yet.

The only way to know for certain is to check your postcode directly with DIGI, since coverage is expanding street by street rather than all at once.

One catch worth knowing: CGNAT

DIGI uses CGNAT for IPv4 addressing, which means customers share a public address rather than each having their own. For ordinary browsing, streaming and video calls this makes no practical difference at all.

It matters if you want to reach something at home from outside, a security camera system, a home server, or self-hosted smart home software. Behind CGNAT, that kind of inbound access either doesn’t work or needs a workaround. If that’s part of your setup, ask DIGI directly before switching, and our static IP address guide explains what CGNAT does and the free alternatives worth trying.

Is DIGI broadband too good to be true?

Not too good to be true, just too small to matter for most people yet. A brand new network with a tiny footprint and no long track record on customer service carries more risk than a household name, and there’s less public evidence on how DIGI handles faults, installs or complaints when things go wrong, because not many people have needed to find out. The prices are real and the contract terms are real. Sign up now and you’re an early adopter, not a customer joining an established service with years of reviews behind it.

If DIGI broadband isn’t near you, the underlying lesson still applies elsewhere. Full fibre prices have been falling as more networks compete street by street, so it’s worth rechecking what’s available at your address every so often rather than assuming your current deal is still competitive.

What if DIGI broadband hasn’t reached your street yet?

Odds are it hasn’t. DIGI’s footprint is still small, and it’s one of several smaller, so-called “altnet” fibre builders working street by street across the UK rather than covering a whole region at once. Openreach, Virgin Media and CityFibre remain the networks most households actually sit on, and any of them might carry a full fibre deal that beats what you’re paying now, DIGI or not.

The practical move is the same one worth doing every year or two regardless of DIGI: run your postcode through a comparison tool and see what’s actually live at your address today, not what was live when you last switched. Full fibre availability keeps changing street by street, and a deal that wasn’t there last year sometimes is now.

If you’re mid-contract with your current provider, check the exit fee before you commit to anything new, DIGI included. A cheaper monthly price is only a genuine saving once any early exit charge from your existing supplier is accounted for.

Frequently asked questions about DIGI broadband

The bigger picture here isn’t really about one small ISP in Hertfordshire. It’s that full fibre competition keeps arriving in pockets, and the only way to benefit is to actually check what’s on your street rather than staying with whatever you signed up for years ago. If you’re out of contract already, that check takes about two minutes and can save considerably more than switching to DIGI ever would on its own. Our guide to out of contract broadband covers exactly that, and if full fibre itself is new to your area, our full fibre upgrade guide is worth reading first.

Sources

• thinkbroadband: Digi UK full fibre footprint growing with 10Gbps for £25 offer
• ISPreview: DIGI expands full fibre to 10,000 UK premises
• ISPreview: Digi Comms acquires 51% stake in WhyFibre

Prices and coverage checked September 2026. An altnet’s footprint changes fast, so check your own postcode with DIGI directly.