15 providers offer 143 broadband deals in Southfields, from £20 a month (£40 after 12 months) and up to 7,000 Mbps. Typical measured speed is 79 Mbps down and 31 Mbps up, 22% below the UK download average. Full fibre is available to 90.8% of homes.
Deals for Southfields, checked and refreshed daily.
Best value broadband deal in Southfields
The best value in Southfields on full first-year cost is 4th Utility's 900Mb Full Fibre (24 Months): £264 across year one, about £22 a month. At 900 Mbps it copes with anything a household runs at once.
Best value in Southfields
£22/mo
for 12 months, then £44/mo
Cheapest broadband deal in Southfields
The cheapest deal in Southfields is 300Mb Full Fibre (24 Months) from 4th Utility at £20.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £20.00 is an intro price that rises to £40.00 a month after the intro window, making the real first-year cost £240. YouFibre is essentially level at £20.00 a month.
Cheapest in Southfields
£20/mo
for 12 months, then £40/mo
Runner-up on price
£20/mo
No rises, no surprises.
Fastest broadband deal in Southfields
The fastest deal available in Southfields is You 8000 from YouFibre at 7,000 Mbps.
Fastest in Southfields
£50/mo
No rises, no surprises.
Compare broadband deals in Southfields
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£23/mo
No rises, no surprises.
£25.99/mo
rises to £29.99 in March 2027 (+£4)
£23.99/mo
rises to £27.99 in March 2027 (+£4)
Broadband providers in Southfields
15 providers serve Southfields including Sky, BT and Vodafone, with YouFibre the fastest at 7,000 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 Southfields download speed at 79 Mbps.
Upgrade nudge
Room to upgrade in Southfields
Only 15% are on 300Mbps or faster, even though 91% 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 Southfields line runs 79 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 91% of Southfields, and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Southfields have?
Superfast broadband reaches 100% of Southfields premises but gigabit only 91%, so around 9% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Southfields?
Outdoor 5G reaches 100% of Southfields 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.
5G & 4G home broadband
Outdoor 5G covers 100% of Southfields, enough for a 5G home-broadband hub to stand in for a fixed line.
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Speed and coverage figures for Southfieldscome 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.