17 providers offer 142 broadband deals in Giant's Causeway, from £19.99 a month and up to 1,600 Mbps. Typical measured speed is 77 Mbps down and 19 Mbps up, 24% below the UK download average.
Best value broadband deal in Giant's Causeway, Causeway Coast and Glens (BT57)
The best value in Giant's Causeway, Causeway Coast and Glens (BT57) on full first-year cost is Plusnet's Full Fibre 145: £292 across year one, about £24 a month. A £155 reward card is bundled in. 145 Mbps covers streaming, video calls and working from home.
Best value in Giant's Causeway, Causeway Coast and Glens (BT57)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
Avg £26.32/mo over contract · £632 total over 24 months
Fastest broadband deal in Giant's Causeway, Causeway Coast and Glens (BT57)
The fastest deal available in Giant's Causeway, Causeway Coast and Glens (BT57) is Full Fibre 1.6GB Premium from EE at 1,600 Mbps.
Fastest in Giant's Causeway, Causeway Coast and Glens (BT57)
Full Fibre 1.6GB Premium
115 Mbps upload · Full Fibre
Best for power users & big households
£33.99/mo
rises to £37.99 in March 2027 (+£4)
Avg £37.32/mo over contract · £896 total over 24 months
Cheapest broadband deal in Giant's Causeway, Causeway Coast and Glens (BT57)
The cheapest deal in Giant's Causeway, Causeway Coast and Glens (BT57) is Full Fibre 150 from Fibrus at £19.99 a month for 159 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. 4th Utility is essentially level at £20.00 a month. Comfortably faster than the UK average.
Cheapest in Giant's Causeway, Causeway Coast and Glens (BT57)
£19.99/mo
No rises, no surprises.
£360 total over 18 months
Runner-up on price
300Mb Full Fibre (24 Months)
300 Mbps upload · Full Fibre
Best for 4–5 person households, heavy use
£20/mo
for 12 months, then £40/mo
Avg £30/mo over contract · £720 total over 24 months
Compare broadband deals in Giant's Causeway, Causeway Coast and Glens (BT57)
300Mb Full Fibre (24 Months)
300 Mbps upload · Full Fibre
Best for 4–5 person households, heavy use
£20/mo
for 12 months, then £40/mo
Avg £30/mo over contract · £720 total over 24 months
£30/mo
rises to £33.50 in April 2027 (+£3.50)
Avg £32.63/mo over contract · £783 total over 24 months
Sky Full Fibre Gigafast
100 Mbps upload · Full Fibre
Best for power users & big households
£31/mo
No rises, no surprises.
£749 total over 24 months
£21/mo
rises to £24 in April 2027 (+£3)
Avg £23.25/mo over contract · £558 total over 24 months
Broadband providers in Giant's Causeway, Causeway Coast and Glens (BT57)
17 providers serve Giant's Causeway, Causeway Coast and Glens (BT57), with EE the fastest at 1,600 Mbps.
Ranked by Ofcom complaints per 100,000 customers, fewest first. A down arrow is below the industry average, up is above, and a dash means Ofcom publishes no figure for that provider (usually because it is below Ofcom's 1.5% market-share reporting threshold). A small diagonal arrow shows the past-year trend (↘ improving, ↗ getting worse).
Ofcom records the typical Giant's Causeway, Causeway Coast and Glens (BT57) download speed at 77 Mbps.
Upgrade nudge
Room to upgrade in Giant's Causeway, Causeway Coast and Glens (BT57)
Only 10% of the 1,400 connections here are on 300Mbps or faster, even though 87% can get gigabit.
The faster line is already there. For most of these homes it is the contract holding them back, not the infrastructure.
Is your broadband good enough?
The typical Giant's Causeway, Causeway Coast and Glens (BT57) line runs 77 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 87% of Giant's Causeway, Causeway Coast and Glens (BT57), and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Giant's Causeway, Causeway Coast and Glens (BT57)?
The wholesale networks carrying Giant's Causeway, Causeway Coast and Glens (BT57) broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Real altnet coverage in Giant's Causeway, Causeway Coast and Glens (BT57), not the press release version. The list comes from who is actually selling deals at addresses here, network by network.
- CityFibre: Sky, The One Broadband
- 4th Utility: 4th Utility, Rise Fibre
- Fibrus
Of the major networks, Openreach are also live here (Openreach is on every street, so the interesting variable is the altnets).
Right now 17 providers are running deals to addresses in Giant's Causeway, Causeway Coast and Glens (BT57).
What broadband coverage does Giant's Causeway, Causeway Coast and Glens (BT57) have?
Superfast broadband reaches 91% of Giant's Causeway, Causeway Coast and Glens (BT57) premises and gigabit 87%, on Ofcom's premise-level data.
Can I rely on mobile broadband in Giant's Causeway, Causeway Coast and Glens (BT57)?
Outdoor 5G reaches 100% of Giant's Causeway, Causeway Coast and Glens (BT57) homes. Here is how mobile holds up if the line drops.
How Giant's Causeway, Causeway Coast and Glens (BT57) compares within Causeway Coast and Glens
Across 9 postcode districts in Causeway Coast and Glens, by premises count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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* Based on Go.Compare research estimating that 28% of UK broadband users pay for faster broadband speeds than they need (which we interpret as overpaying), equivalent to around 7.5m UK households.
Speed and coverage figures for Giant's Causeway, Causeway Coast and Glens (BT57)come from Ofcom's Connected Nations data, current to January 2026. Deal prices are pulled live from providers. Compiled by the FindBroadband team. See how we rank and source our data.