17 providers offer 224 broadband deals in Denham, from £20 a month (£40 after 12 months) and up to 5,000 Mbps. Typical measured speed is 90 Mbps down and 19 Mbps up, 11% below the UK download average. Full fibre is available to 76.8% of homes.
Deals for Denham (UB9), checked and refreshed daily.
Best value broadband deal in Denham (UB9)
The best value in Denham (UB9) on full first-year cost is toob's Home 900: £248 across year one, about £21 a month. At 900 Mbps it copes with anything a household runs at once.
Best value in Denham (UB9)
£20/mo
rises to £22 in April 2027 (+£2)
Cheapest broadband deal in Denham (UB9)
The cheapest deal in Denham (UB9) 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. Virgin Media O2 is essentially level at £20.32 a month.
Cheapest in Denham (UB9)
£20/mo
for 12 months, then £40/mo
Runner-up on price
£18.99/mo
rises to £22.99 in April 2027 (+£4)
Fastest broadband deal in Denham (UB9)
The fastest deal available in Denham (UB9) is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in Denham (UB9)
£50/mo
No rises, no surprises.
Compare broadband deals in Denham (UB9)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£25.99/mo
rises to £29.99 in March 2027 (+£4)
£23.99/mo
rises to £27.99 in March 2027 (+£4)
£18.99/mo
rises to £22.99 in April 2027 (+£4)
Broadband providers in Denham (UB9)
17 providers serve Denham (UB9) including Virgin Media, BT and Vodafone, 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 Denham (UB9) download speed at 90 Mbps.
Upgrade nudge
Room to upgrade in Denham (UB9)
Only 13% of the 4,700 connections here are on 300Mbps or faster, even though 75% 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 Denham (UB9) line runs 90 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 75% of Denham (UB9), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Denham (UB9) have?
Superfast broadband reaches 93% of Denham (UB9) premises but gigabit only 75%, so around 18% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Denham (UB9)?
Outdoor 5G reaches 100% of Denham (UB9) 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 100% of Denham (UB9), enough for a 5G home-broadband hub to stand in for a fixed line.
How Denham (UB9) compares within Buckinghamshire
Across 25 postcode districts in Buckinghamshire, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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Speed and coverage figures for Denham (UB9)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.