13 providers offer 49 broadband deals in Dorchester, from £19 a month and up to 830 Mbps. Typical measured speed is 68 Mbps down and 53 Mbps up, 33% below the UK download average. Full fibre is available to 80.7% of homes.
Deals for Dorchester, checked and refreshed daily.
Best value broadband deal in Dorchester
The best value in Dorchester on full first-year cost is Gigaclear's Odyssey 600: £288 across year one, about £24 a month. A £40 gift card is bundled in. At 600 Mbps it copes with anything a household runs at once.
Best value in Dorchester
£24/mo
No rises, no surprises.
Cheapest broadband deal in Dorchester
The cheapest deal in Dorchester is Explorer 300 from Gigaclear at £19.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. It also throws in a £30 gift card. Onestream is essentially level at £20.86 a month.
Cheapest in Dorchester
£19/mo
No rises, no surprises.
Runner-up on price
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Fastest broadband deal in Dorchester
The fastest deal available in Dorchester is Galileo 900 from Gigaclear at 830 Mbps.
Fastest in Dorchester
£29/mo
No rises, no surprises.
Compare broadband deals in Dorchester
£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 Dorchester
13 providers serve Dorchester including Sky, BT and Vodafone, with Gigaclear the fastest at 830 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 Dorchester download speed at 68 Mbps.
Upgrade nudge
Room to upgrade in Dorchester
Only 9% 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 Dorchester line runs 68 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 81% of Dorchester, and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Dorchester have?
Superfast broadband reaches 100% of Dorchester 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 Dorchester?
Outdoor 5G reaches 97% of Dorchester 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 Dorchestercome 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.