Full fibre reaches 77.1% of homes in Hertford Castle, though only 17% of connections run at 300 Mbps or faster. Typical measured speed is 115 Mbps down and 20 Mbps up, 14% above the UK download average. 15 providers offer 203 broadband deals, up to 1,600 Mbps.
Deals for Hertford Castle (SG13), checked and refreshed daily.
Best value broadband deal in Hertford Castle (SG13)
The best value in Hertford Castle (SG13) 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 Hertford Castle (SG13)
£20/mo
for 12 months, then £40/mo
Cheapest broadband deal in Hertford Castle (SG13)
The cheapest deal in Hertford Castle (SG13) 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 Hertford Castle (SG13)
£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 Hertford Castle (SG13)
The fastest deal available in Hertford Castle (SG13) is Full Fibre 1.6GB from EE at 1,600 Mbps. Zen Internet matches it at the same top speed.
Fastest in Hertford Castle (SG13)
£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 Hertford Castle (SG13)
£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 Hertford Castle (SG13)
15 providers serve Hertford Castle (SG13) including Virgin Media, Sky and BT, 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 Hertford Castle (SG13) download speed at 115 Mbps.
Upgrade nudge
Room to upgrade in Hertford Castle (SG13)
Only 17% of the 5,600 connections here are on 300Mbps or faster, even though 76% 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 Hertford Castle (SG13) line runs 115 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 76% of Hertford Castle (SG13), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Hertford Castle (SG13) have?
Superfast broadband reaches 92% of Hertford Castle (SG13) premises but gigabit only 76%, so around 16% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Hertford Castle (SG13)?
Outdoor 5G reaches 100% of Hertford Castle (SG13) 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 Hertford Castle (SG13), enough for a 5G home-broadband hub to stand in for a fixed line.
How Hertford Castle (SG13) compares within East Hertfordshire
Across 8 postcode districts in East Hertfordshire, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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Speed and coverage figures for Hertford Castle (SG13)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.