Full fibre reaches 89.8% of homes in Dorchester, though only 6% of connections run at 300 Mbps or faster. Typical measured speed is 67 Mbps down and 19 Mbps up, 34% below the UK download average. 14 providers offer 178 broadband deals, up to 1,600 Mbps.
Deals for Dorchester (DT1), checked and refreshed daily.
Best value broadband deal in Dorchester (DT1)
The best value in Dorchester (DT1) on full first-year cost is 4th Utility's 300Mb Full Fibre (24 Months): £240 across year one, about £20 a month. At 300 Mbps it copes with anything a household runs at once.
Best value in Dorchester (DT1)
£20/mo
for 12 months, then £40/mo
Cheapest broadband deal in Dorchester (DT1)
The cheapest deal in Dorchester (DT1) is Fibre 40 from Onestream at £18.50 a month for 40 Mbps. 4th Utility is essentially level at £20.00 a month. Well below the UK average, which shows on a busy evening.
Cheapest in Dorchester (DT1)
£18.50/mo
rises to £21.25 in April 2027 (+£2.75)
Runner-up on price
£20/mo
for 12 months, then £40/mo
Fastest broadband deal in Dorchester (DT1)
The fastest deal available in Dorchester (DT1) is Full Fibre 1.6GB from EE at 1,600 Mbps. Zen Internet matches it at the same top speed.
Fastest in Dorchester (DT1)
£38.99/mo
rises to £42.99 in March 2027 (+£4)
Runner-up on speed
£45/mo
No rises, no surprises.
Compare broadband deals in Dorchester (DT1)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£27.99/mo
rises to £31.99 in March 2027 (+£4)
£23/mo
No rises, no surprises.
£23/mo
No rises, no surprises.
Broadband providers in Dorchester (DT1)
14 providers serve Dorchester (DT1) including Sky, BT and Vodafone, 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 Dorchester (DT1) download speed at 67 Mbps.
Upgrade nudge
Room to upgrade in Dorchester (DT1)
Only 6% of the 6,600 connections here are on 300Mbps or faster, even though 89% 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 (DT1) line runs 67 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 89% of Dorchester (DT1), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Dorchester (DT1) have?
Superfast broadband reaches 100% of Dorchester (DT1) premises but gigabit only 89%, so around 11% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Dorchester (DT1)?
Outdoor 5G reaches 94% of Dorchester (DT1) 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.
How Dorchester (DT1) compares within Dorset
Across 19 postcode districts in Dorset, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
Ready to switch
See what's actually live in Dorchester (DT1).
Enter your address and we'll show every deal you can genuinely order on your line, ranked by what you'll pay across the whole contract, not by who pays us.
Speed and coverage figures for Dorchester (DT1)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.