19 providers offer 331 broadband deals in Hertsmere, from £13.50 a month (£18 after 12 months) and up to 5,000 Mbps. Typical measured speed is 110 Mbps down and 20 Mbps up, 9% above the UK download average. Full fibre is available to 85.7% of homes.
Deals for Hertsmere, checked and refreshed daily.
Best value broadband deal in Hertsmere
The best value in Hertsmere 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 Hertsmere
250Mb Full Fibre CityFibre (24 Months)
£16.50/mo
for 12 months, then £22/mo
Cheapest broadband deal in Hertsmere
The cheapest deal in Hertsmere 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. Community Fibre is essentially level at £15.00 a month. Above the UK average on download.
Cheapest in Hertsmere
150Mb Full Fibre CityFibre (24 Months)
£13.50/mo
for 12 months, then £18/mo
Runner-up on price
£14/mo
rises to £17 in April 2027 (+£3)
Fastest broadband deal in Hertsmere
The fastest deal available in Hertsmere is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps. Community Fibre matches it at the same top speed.
Fastest in Hertsmere
£50/mo
No rises, no surprises.
Runner-up on speed
£63/mo
rises to £66 in April 2027 (+£3)
Compare broadband deals in Hertsmere
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£14/mo
rises to £17 in April 2027 (+£3)
£25/mo
rises to £29 in April 2027 (+£4)
150Mb Full Fibre CityFibre (24 Months)
£18.50/mo
for 12 months, then £23.50/mo
Broadband providers in Hertsmere
19 providers serve Hertsmere including Virgin Media, Sky and BT, with Community Fibre 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 Hertsmere download speed at 110 Mbps.
Upgrade nudge
Room to upgrade in Hertsmere
Only 18% of the 33,000 connections here are on 300Mbps or faster, even though 85% 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 Hertsmere line runs 110 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 85% of Hertsmere, and the fastest available is 2,076 Mbps. The full split by band is below.
What broadband coverage does Hertsmere have?
Superfast broadband reaches 96% of Hertsmere premises but gigabit only 85%, so around 11% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Hertsmere?
Outdoor 5G reaches 100% of Hertsmere 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 Hertsmere, enough for a 5G home-broadband hub to stand in for a fixed line.
Broadband speeds by Hertsmere neighbourhood
| Neighbourhood | Median | vs area | Upload | Superfast | Gigabit | 5G |
|---|---|---|---|---|---|---|
| Bushey WD23 | 115 | +5 | 21 | 98% | 90% | 100% |
| Borehamwood Brookmeadow WD6 | 108 | -2 | 19 | 96% | 85% | 100% |
| Aldenham WD7 | 108 | -2 | 22 | 95% | 74% | 100% |
| Northaw and Cuffley EN6 | 106 | -4 | 18 | 97% | 87% | 100% |
Measured Ofcom data per Hertsmere neighbourhood, ranked fastest first. Median and upload are in Mbps; vs area is the median difference from the Hertsmere average; superfast, gigabit and 5G are the % of premises covered. Swipe the table sideways for more columns.
Postcode districts in Hertsmere
Towns in Hertsmere
Nearby areas
Frequently asked questions
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Speed and coverage figures for Hertsmerecome 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.