21 providers offer 289 broadband deals in Costessey, from £15.00 a month and up to 5,000 Mbps. Typical measured speed is 59 Mbps down and 14 Mbps up, 42% below the UK download average.
Best value broadband deal in Costessey, South Norfolk
The best value in Costessey, South Norfolk 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 Costessey, South Norfolk
£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 Costessey, South Norfolk
The fastest deal available in Costessey, South Norfolk is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in Costessey, South Norfolk
Full Fibre 5 Gigafast+
3000 Mbps upload · Full Fibre
Best for power users & big households
£80/mo
No rises, no surprises.
£1925 total over 24 months
Cheapest broadband deal in Costessey, South Norfolk
The cheapest deal in Costessey, South Norfolk is Fast 24m from giffgaff at £5.00 a month for 200 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £5.00 is an intro price that rises to £25.00 a month after the intro window, making the real first-year cost £180. Comfortably faster than the UK average.
Cheapest in Costessey, South Norfolk
£5/mo
for 6 months, then £25/mo
Avg £20/mo over contract · £480 total over 24 months
Compare broadband deals in Costessey, South Norfolk
£5/mo
for 6 months, then £28/mo
Avg £22.25/mo over contract · £534 total over 24 months
£29/mo
rises to £31 in April 2027 (+£2)
Avg £30.50/mo over contract · £732 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
£19/mo
No rises, no surprises.
£342 total over 18 months
Broadband providers in Costessey, South Norfolk
21 providers serve Costessey, South Norfolk, with Sky the fastest at 5,000 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 Costessey, South Norfolk download speed at 59 Mbps.
Upgrade nudge
Room to upgrade in Costessey, South Norfolk
Only 4% are on 300Mbps or faster, even though 67% 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 Costessey, South Norfolk line runs 59 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 67% of Costessey, South Norfolk, and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Costessey, South Norfolk?
The wholesale networks carrying Costessey, South Norfolk broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Independent altnets reaching Costessey, South Norfolk, listed below. The companies that build their own fibre rather than reselling someone else's, which is often the cheapest gigabit on the street.
- CityFibre: Sky, TalkTalk, The One Broadband, Vodafone, Zen Internet
- Truespeed
- 4th Utility: 4th Utility, Rise Fibre
And the major networks: Openreach and Virgin Media O2 both reach this area (Openreach is the default network, in case the rest haven't reached your street).
21 providers are live with broadband deals in Costessey, South Norfolk.
What broadband coverage does Costessey, South Norfolk have?
Superfast broadband reaches 98% of Costessey, South Norfolk premises but gigabit only 67%, so around 31% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Costessey, South Norfolk?
Outdoor 5G reaches 97% of Costessey, South Norfolk, but 2% of homes get no indoor 4G from any network, so a mobile backup here wants a window.
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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 Costessey, South Norfolkcome 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.