11 providers offer 41 broadband deals in South Witham, from £19.94 a month and up to 80 Mbps. Typical measured speed is 42 Mbps down and 8 Mbps up, 58% below the UK download average.
Deals for South Witham, checked and refreshed daily.
Cheapest broadband deal in South Witham
The cheapest deal in South Witham is Onestream Fibre 55 from Onestream at £19.94 a month for 40 Mbps. POP Telecom is essentially level at £22.00 a month. Well below the UK average, which shows on a busy evening.
Cheapest in South Witham
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Runner-up on price
£21/mo
rises to £24 in April 2027 (+£3)
Fastest broadband deal in South Witham
The fastest deal available in South Witham is Onestream Fibre 80 from Onestream at 80 Mbps. Below the UK average on download.
Fastest in South Witham
£21.45/mo
rises to £24.20 in April 2027 (+£2.75)
Compare broadband deals in South Witham
£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)
£24/mo
No rises, no surprises.
Broadband providers in South Witham
11 providers serve South Witham including Sky, BT and Vodafone, with Onestream the fastest at 80 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 South Witham download speed at 42 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 South Witham line runs 42 Mbps.
Working from home
StrugglingStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 0% of South Witham, and the fastest available is 80 Mbps. The full split by band is below.
What broadband coverage does South Witham have?
Superfast broadband reaches 75% of South Witham premises but gigabit only 0%, so around 75% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in South Witham?
Outdoor 5G reaches 97% of South Witham 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 97% of South Witham, enough for a 5G home-broadband hub to stand in for a fixed line.
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Speed and coverage figures for South Withamcome 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.