14 providers offer 63 broadband deals in Southwick, from £20.95 a month and up to 2,300 Mbps. Typical measured speed is 35 Mbps down and 8 Mbps up, 65% below the UK download average.
Deals for Southwick, checked and refreshed daily.
Best value broadband deal in Southwick
The best value in Southwick on full first-year cost is Onestream's Full Fibre 900: £298 across year one, about £25 a month. At 550 Mbps it copes with anything a household runs at once.
Best value in Southwick
£23.95/mo
rises to £26.70 in April 2027 (+£2.75)
Cheapest broadband deal in Southwick
The cheapest deal in Southwick is Full Fibre 150 from Onestream at £20.95 a month for 115 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. POP Telecom is essentially level at £22.00 a month. About level with the UK average.
Cheapest in Southwick
£20.95/mo
rises to £23.70 in April 2027 (+£2.75)
Runner-up on price
£21/mo
rises to £24 in April 2027 (+£3)
Fastest broadband deal in Southwick
The fastest deal available in Southwick is Home 2300 from toob at 2,300 Mbps. Next fastest is Pro 3 Full Fibre 2.2GB CityFibre from Vodafone at 2,200 Mbps.
Fastest in Southwick
£35/mo
rises to £37 in April 2027 (+£2)
Runner-up on speed
Pro 3 Full Fibre 2.2GB CityFibre
£35/mo
rises to £38.50 in April 2027 (+£3.50)
Compare broadband deals in Southwick
£25/mo
rises to £29 in April 2027 (+£4)
£24/mo
No rises, no surprises.
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£21/mo
rises to £24 in April 2027 (+£3)
Broadband providers in Southwick
14 providers serve Southwick including Sky, BT and Vodafone, with toob the fastest at 2,300 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 Southwick download speed at 35 Mbps.
Upgrade nudge
You could be getting more.
Slow broadband here is usually the contract, not the line. A faster package may already be available at your address for similar money.
Is your broadband good enough?
The typical Southwick line runs 35 Mbps.
Working from home
StrugglingStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 0% of Southwick, and the fastest available is 160 Mbps. The full split by band is below.
What broadband coverage does Southwick have?
Superfast broadband reaches 89% of Southwick premises but gigabit only 0%, so around 89% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Southwick?
Outdoor 5G reaches 92% of Southwick 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 92% of Southwick, enough for a 5G home-broadband hub to stand in for a fixed line.
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Speed and coverage figures for Southwickcome 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.