18 providers offer 212 broadband deals in Chalfont St Peter, from £20.00 a month and up to 1,600 Mbps. Typical measured speed is 121 Mbps down and 37 Mbps up, 20% above the UK download average.
Best value broadband deal in Chalfont St Peter, Buckinghamshire (SL9)
The best value in Chalfont St Peter, Buckinghamshire (SL9) 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 Chalfont St Peter, Buckinghamshire (SL9)
£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 Chalfont St Peter, Buckinghamshire (SL9)
The fastest deal available in Chalfont St Peter, Buckinghamshire (SL9) is Full Fibre 1.6GB Premium from EE at 1,600 Mbps.
Fastest in Chalfont St Peter, Buckinghamshire (SL9)
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 Chalfont St Peter, Buckinghamshire (SL9)
The cheapest deal in Chalfont St Peter, Buckinghamshire (SL9) 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 Chalfont St Peter, Buckinghamshire (SL9)
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 Chalfont St Peter, Buckinghamshire (SL9)
£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 Chalfont St Peter, Buckinghamshire (SL9)
18 providers serve Chalfont St Peter, Buckinghamshire (SL9), 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 Chalfont St Peter, Buckinghamshire (SL9) download speed at 121 Mbps.
Upgrade nudge
Room to upgrade in Chalfont St Peter, Buckinghamshire (SL9)
Only 20% of the 6,000 connections here are on 300Mbps or faster, even though 90% 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 Chalfont St Peter, Buckinghamshire (SL9) line runs 121 Mbps.
Working from home
GreatStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 90% of Chalfont St Peter, Buckinghamshire (SL9), and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Chalfont St Peter, Buckinghamshire (SL9)?
The wholesale networks carrying Chalfont St Peter, Buckinghamshire (SL9) broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Independent altnets reaching Chalfont St Peter, Buckinghamshire (SL9), 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, The One Broadband, Vodafone
- 4th Utility: 4th Utility, Rise Fibre
Behind the altnets, Openreach and Virgin Media O2 run as the major-network options (Openreach is the country-wide baseline, so it's a given).
Real provider count in Chalfont St Peter, Buckinghamshire (SL9): 18 actively selling into addresses.
What broadband coverage does Chalfont St Peter, Buckinghamshire (SL9) have?
Superfast broadband reaches 97% of Chalfont St Peter, Buckinghamshire (SL9) premises but gigabit only 90%, so around 7% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Chalfont St Peter, Buckinghamshire (SL9)?
Outdoor 5G reaches 100% of Chalfont St Peter, Buckinghamshire (SL9) homes. Here is how mobile holds up if the line drops.
5G & 4G home broadband
Outdoor 5G covers 100% of Chalfont St Peter, Buckinghamshire (SL9), enough for a 5G home-broadband hub to stand in for a fixed line.
How Chalfont St Peter, Buckinghamshire (SL9) compares within Buckinghamshire
Across 25 postcode districts in Buckinghamshire, by premises count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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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 Chalfont St Peter, Buckinghamshire (SL9)come 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.