17 providers offer 251 broadband deals in Welwyn Garden City, from £13.50 a month (£18 after 12 months) and up to 5,000 Mbps. Typical measured speed is 136 Mbps down and 22 Mbps up, 35% above the UK download average. Full fibre is available to 90.7% of homes.
Deals for Welwyn Garden City, checked and refreshed daily.
Best value broadband deal in Welwyn Garden City
The best value in Welwyn Garden City on full first-year cost is 4th Utility's 250Mb Full Fibre CityFibre (24 Months): £198 across year one, about £17 a month. 250 Mbps covers streaming, video calls and working from home.
Best value in Welwyn Garden City
250Mb Full Fibre CityFibre (24 Months)
£16.50/mo
for 12 months, then £22/mo
Cheapest broadband deal in Welwyn Garden City
The cheapest deal in Welwyn Garden City is 150Mb Full Fibre CityFibre (24 Months) from 4th Utility at £13.50 a month for 150 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £13.50 is an intro price that rises to £18.00 a month after the intro window, making the real first-year cost £162. Above the UK average on download.
Cheapest in Welwyn Garden City
150Mb Full Fibre CityFibre (24 Months)
£13.50/mo
for 12 months, then £18/mo
Fastest broadband deal in Welwyn Garden City
The fastest deal available in Welwyn Garden City is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in Welwyn Garden City
£50/mo
No rises, no surprises.
Compare broadband deals in Welwyn Garden City
£22.99/mo
rises to £26.99 in March 2027 (+£4)
150Mb Full Fibre CityFibre (24 Months)
£18.50/mo
for 12 months, then £23.50/mo
£25.99/mo
rises to £29.99 in March 2027 (+£4)
£23.99/mo
rises to £27.99 in March 2027 (+£4)
Broadband providers in Welwyn Garden City
17 providers serve Welwyn Garden City 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 Welwyn Garden City download speed at 136 Mbps.
Upgrade nudge
Room to upgrade in Welwyn Garden City
Only 20% of the 17,000 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 Welwyn Garden City line runs 136 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 90% of Welwyn Garden City, and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Welwyn Garden City have?
Superfast broadband reaches 97% of Welwyn Garden City 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 Welwyn Garden City?
Outdoor 5G reaches 100% of Welwyn Garden City 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 Welwyn Garden City, enough for a 5G home-broadband hub to stand in for a fixed line.
More areas in Welwyn Hatfield
Nearby areas
Frequently asked questions
Ready to switch
See what's actually live in Welwyn Garden City.
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 Welwyn Garden Citycome 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.