13 providers offer 64 broadband deals in Harwell, from £18.99 a month and up to 1,130 Mbps. Typical measured speed is 97 Mbps down and 22 Mbps up, 4% below the UK download average. Full fibre is available to 80.7% of homes.
Deals for Harwell, checked and refreshed daily.
Best value broadband deal in Harwell
The best value in Harwell on full first-year cost is Virgin Media O2's M500 Fibre broadband: £280 across year one, about £23 a month. At 516 Mbps it copes with anything a household runs at once.
Best value in Harwell
£21.99/mo
rises to £25.99 in April 2027 (+£4)
Cheapest broadband deal in Harwell
The cheapest deal in Harwell is M250 Broadband Only from Virgin Media O2 at £18.99 a month for 264 Mbps. Comfortably faster than the UK average.
Cheapest in Harwell
£18.99/mo
rises to £22.99 in April 2027 (+£4)
Fastest broadband deal in Harwell
The fastest deal available in Harwell is Gig1 Broadband Only from Virgin Media O2 at 1,130 Mbps.
Fastest in Harwell
£23.99/mo
rises to £27.99 in April 2027 (+£4)
Compare broadband deals in Harwell
£24/mo
No rises, no surprises.
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
£21/mo
rises to £24 in April 2027 (+£3)
Broadband providers in Harwell
13 providers serve Harwell including Sky, BT and Vodafone, with Virgin Media O2 the fastest at 1,130 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 Harwell download speed at 97 Mbps.
Upgrade nudge
Room to upgrade in Harwell
Only 15% are on 300Mbps or faster, even though 81% 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 Harwell line runs 97 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 81% of Harwell, and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Harwell have?
Superfast broadband reaches 100% of Harwell premises but gigabit only 81%, so around 19% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Harwell?
Outdoor 5G reaches 100% of Harwell 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.
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Speed and coverage figures for Harwellcome 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.