Typical measured speed is 58 Mbps down and 14 Mbps up, 43% below the UK download average. 12 providers offer 47 broadband deals, up to 400 Mbps.
Deals for St Fagans, checked and refreshed daily.
Best value broadband deal in St Fagans
The best value in St Fagans is Starlink's Residential - 100 Mbps, the cheapest deal that is a real step up in speed: £499 across year one, about £42 a month. 100 Mbps covers streaming, video calls and working from home.
Best value in St Fagans
£40/mo
may rise
Cheapest broadband deal in St Fagans
The cheapest deal in St Fagans is Fibre 40 from Onestream at £18.50 a month for 40 Mbps. POP Telecom is essentially level at £22.50 a month. Well below the UK average, which shows on a busy evening.
Cheapest in St Fagans
£18.50/mo
rises to £21.25 in April 2027 (+£2.75)
How we picked this
The lowest cost over the first year, out of 46 fixed-line deals here. Prices checked 22 October 2026.
Runner-up on price
£21/mo
rises to £24 in April 2027 (+£3)
Fastest broadband deal in St Fagans
The fastest deal available in St Fagans is Residential - Max from Starlink at 400 Mbps.
Fastest in St Fagans
£80/mo
may rise
How we picked this
The highest advertised download speed out of 46 fixed-line deals here, the cheaper one on a tie. Prices checked 22 October 2026.
Compare broadband deals in St Fagans
£24/mo
may rise during contract
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£23/mo
may rise during contract
£24.99/mo
rises to £28.99 in March 2027 (+£4)
Where these figures come from
Prices checked 22 October 2026.
Broadband providers in St Fagans
12 providers serve St Fagans including Sky, BT and Vodafone, with Starlink the fastest at 400 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 St Fagans download speed at 58 Mbps.
Where these figures come from
Prices checked 22 October 2026.
Upgrade nudge
You could be getting more.
Prices drift above the market rate the longer a contract runs, so if you have not compared in over a year you are likely paying more than you need to.
Is your broadband good enough?
The typical St Fagans line runs 58 Mbps.
Working from home
OKStreaming and family use
OKWhere these figures come from: Ofcom Connected Nations, data to January 2026.
What speeds are people actually getting?
Gigabit reaches 33% of St Fagans. The full split by band is below.
Where these figures come from: Ofcom Connected Nations, data to January 2026.
What broadband coverage does St Fagans have?
Superfast broadband reaches 99% of St Fagans premises but gigabit only 33%, so around 66% of homes can get fast broadband but not the fastest.
Where these figures come from: Ofcom Connected Nations, data to January 2026. See how every UK region compares in The State of UK Broadband.
Can I rely on mobile broadband in St Fagans?
Outdoor 5G reaches 100% of St Fagans homes. Here is how mobile holds up if the line drops.
The two 5G figures differ. “5G availability” is everyday 5G running on the existing 4G core, which is what most phones show. “Next-gen 5G” is standalone 5G: a full 5G network with lower lag, still reaching fewer places.
Where these figures come from: Ofcom Connected Nations, data to January 2026.
5G & 4G home broadband
Outdoor 5G covers 100% of St Fagans, enough for a 5G home-broadband hub to stand in for a fixed line.
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Speed and coverage figures for St Fagans 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.