18 providers offer 213 broadband deals in Blackwater, from £20.00 a month and up to 1,600 Mbps. Typical measured speed is 86 Mbps down and 18 Mbps up, 15% below the UK download average.
Best value broadband deal in Blackwater, Cornwall
The best value in Blackwater, Cornwall 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 Blackwater, Cornwall
£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 Blackwater, Cornwall
The fastest deal available in Blackwater, Cornwall is Full Fibre 1.6GB Premium from EE at 1,600 Mbps.
Fastest in Blackwater, Cornwall
Full Fibre 1.6GB Premium
115 Mbps upload · Full Fibre
Best for power users & big households
£33.99/mo
rises to £37.99 in March 2027 (+£4)
Avg £37.32/mo over contract · £896 total over 24 months
Cheapest broadband deal in Blackwater, Cornwall
The cheapest deal in Blackwater, Cornwall 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. Onestream is essentially level at £20.63 a month.
Cheapest in Blackwater, Cornwall
300Mb Full Fibre (24 Months)
300 Mbps upload · Full Fibre
Best for 4–5 person households, heavy use
£20/mo
for 12 months, then £40/mo
Avg £30/mo over contract · £720 total over 24 months
Runner-up on price
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Compare broadband deals in Blackwater, Cornwall
£21/mo
rises to £24 in April 2027 (+£3)
Avg £23.25/mo over contract · £558 total over 24 months
Gig1 Broadband Only
41 Mbps upload · Hybrid Fibre-Coaxial
Best for power users & big households
£25.99/mo
rises to £29.99 in April 2027 (+£4)
Avg £28.99/mo over contract · £696 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
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Broadband providers in Blackwater, Cornwall
18 providers serve Blackwater, Cornwall, with EE the fastest at 1,600 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 Blackwater, Cornwall download speed at 86 Mbps.
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 Blackwater, Cornwall line runs 86 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 42% of Blackwater, Cornwall, and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Blackwater, Cornwall?
The wholesale networks carrying Blackwater, Cornwall broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Where Blackwater, Cornwall has working altnets, the gigabit market suddenly looks competitive. Here are the ones that have built into the streets here.
- CityFibre: Sky, The One Broadband, Vodafone
- 4th Utility: 4th Utility, Rise Fibre
Openreach and Virgin Media O2 run alongside the altnets in Blackwater, Cornwall (Openreach has a nationwide footprint, so it'll be available).
Provider competition in Blackwater, Cornwall: 18 providers actively in the market.
What broadband coverage does Blackwater, Cornwall have?
Superfast broadband reaches 92% of Blackwater, Cornwall premises but gigabit only 42%, so around 50% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Blackwater, Cornwall?
Outdoor 5G reaches 90% of Blackwater, Cornwall, 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 Blackwater, Cornwallcome 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.