2.3Gb Full Fibre CityFibre (24 Months)
2300Mbps download
Full fibre24-month contract£26.25 for 12 months£0 upfront
£26.25/mo
for 12 months, then £35/mo
In short
The 32 4th Utility broadband deals run from 50 Mbps to 2.3 Gbps, on 12 or 24‑month contracts or no contract. 4th Utility builds its own full fibre network, mostly for new-build homes, flats and student housing. It also sells over CityFibre's network.
All 32 4th Utility broadband deals
32 results
1Gb Full Fibre CityFibre (24 Months)
1000Mbps download
Full fibre24-month contract£19.50 for 12 months£0 upfront
£19.50/mo
for 12 months, then £26/mo
900Mbps Full Fibre (24 Months)
900Mbps download
Full fibre24-month contract£21 for 12 months£0 upfront
£21/mo
for 12 months, then £28/mo
£55/mo
rises to £59 in March 2027 (+£4)
£22/mo
for 12 months, then £44/mo
£25.50/mo
may rise during contract
900Mbps Full Fibre (24 Months)
900Mbps download
Full fibre24-month contract£27 for 12 months£0 upfront
£27/mo
for 12 months, then £36/mo
£30/mo
rises to £34 in March 2027 (+£4)
£36/mo
rises to £40 in March 2027 (+£4)
£33/mo
for 12 months, then £44/mo
Showing 10 of 32
4th Utility at a glance
- a month for 12 months, then £18, the cheapest over 24 months (150Mb Full Fibre CityFibre)
- £13.50
- across 32 deals, all full fibre
- 50 to 2,300 Mbps
- the contract lengths on offer
- 12 or 24 months, or no contract
- a month from March 2027
- +£4
- local areas where we found 4th Utility deals at our sample address
- 7,892 of 10,139
From the 4th Utility deals we track, refreshed every day.
4th Utility broadband prices by speed
| Package | Now | After the rise | Average over 24 months |
|---|---|---|---|
| 50Mbps Full Fibre (24 Months)50 Mbps, full fibre, 24-month contract | Now £18for 12 months, then £25 | After the rise None written in | Average over 24 months £21.50 a month |
| 50Mbps Full Fibre (12 Months)50 Mbps, full fibre, 12-month contract | Now £25 | After the rise £29 from Mar 2027 | Average over 24 months £28.17 a month |
| 100Mbps Full Fibre (24 Months)100 Mbps, full fibre, 24-month contract | Now £18.50 | After the rise None written in | Average over 24 months £18.50 a month |
| 150Mb Full Fibre CityFibre (24 Months)150 Mbps, full fibre, 24-month contract | Now £13.50for 12 months, then £18 | After the rise None written in | Average over 24 months £15.75 a month |
| 150Mbps Full Fibre (24 Months)150 Mbps, full fibre, 24-month contract | Now £13.50for 12 months, then £18 | After the rise None written in | Average over 24 months £15.75 a month |
| 150Mb Full Fibre (24 Months)150 Mbps, full fibre, 24-month contract | Now £24for 12 months, then £32 | After the rise None written in | Average over 24 months £28 a month |
| 150Mb Full Fibre CityFibre (12 Months)150 Mbps, full fibre, 12-month contract | Now £29 | After the rise £33 from Mar 2027 | Average over 24 months £32.17 a month |
| 250Mb Full Fibre CityFibre (24 Months)250 Mbps, full fibre, 24-month contract | Now £16.50for 12 months, then £22 | After the rise None written in | Average over 24 months £19.25 a month |
The cheapest deal for each package without TV. The average counts any intro price and every rise written into the contract.
Does 4th Utility put prices up?
8 of the 32 4th Utility deals we track go up in March 2027: £4 a month. 23 more have no rise written in, and 4th Utility doesn't promise they won't go up. 1 deal promises no price rise during the contract.
Tools for 4th Utility customers
4th Utility contact numbers
- New orders
- 0800 066 2833
From 4th Utility's contact page, checked 24 October 2026. Numbers starting 0800 or 0808 are free to call. Numbers starting 03 cost the same as calls to 01 and 02 numbers and count towards any inclusive minutes.
4th Utility social tariff
- Social Tariff
- £13.99 a month
- 30 Mbps. 4th Utility buildings only.
For people on certain benefits. From 4th Utility's own page, checked 26 October 2026.
Where you can get 4th Utility
We check deals at a sample address in every local area each day. 4th Utility deals showed up in 7,892 of the 10,139 local areas with deals, including 350 of the 361 council areas.
What you can get depends on your address, so check yours before you order.
4th Utility questions
How much is 4th Utility broadband?
The cheapest 4th Utility deal we track over 24 months is 150Mb Full Fibre CityFibre at £13.50 a month for 12 months, then £18 on a 24-month contract. Over 24 months it averages £15.75 a month.
What speeds does 4th Utility offer?
4th Utility's deals run from 50 Mbps to 2,300 Mbps. They are all full fibre, which needs full fibre at your address.
How long is a 4th Utility broadband contract?
The 4th Utility deals we track are on 12 or 24-month contracts or no contract.
Does 4th Utility put its prices up every year?
8 of the 32 4th Utility deals we track go up in March 2027: £4 a month. 23 more have no rise written in, and 4th Utility doesn't promise they won't go up. 1 deal promises no price rise during the contract.
Does 4th Utility have a social tariff?
Yes. 4th Utility has one plan, Social Tariff at £13.99 a month for people on certain benefits. From 4th Utility's own page, checked 26 October 2026.
What is 4th Utility's phone number?
Call 0333 888 4050 for help, faults and leaving. Call 0800 066 2833 for new orders.
Is 4th Utility down?
Our 4th Utility status page shows any problem 4th Utility has reported and the last 30 days. Check 4th Utility's status.
What network does 4th Utility use?
4th Utility builds its own full fibre network, mostly for new-build homes, flats and student housing. It also sells over CityFibre's network.
