17 providers offer 237 broadband deals in St Osyth, from £13.50 a month (£18 after 12 months) and up to 5,000 Mbps. Typical measured speed is 71 Mbps down and 25 Mbps up, 30% below the UK download average. Full fibre is available to 70.3% of homes.
Deals for St Osyth (CO16), checked and refreshed daily.
Best value broadband deal in St Osyth (CO16)
The best value in St Osyth (CO16) 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 St Osyth (CO16)
250Mb Full Fibre CityFibre (24 Months)
£16.50/mo
for 12 months, then £22/mo
Cheapest broadband deal in St Osyth (CO16)
The cheapest deal in St Osyth (CO16) 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 St Osyth (CO16)
150Mb Full Fibre CityFibre (24 Months)
£13.50/mo
for 12 months, then £18/mo
Fastest broadband deal in St Osyth (CO16)
The fastest deal available in St Osyth (CO16) is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in St Osyth (CO16)
£50/mo
No rises, no surprises.
Compare broadband deals in St Osyth (CO16)
£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 St Osyth (CO16)
17 providers serve St Osyth (CO16) including BT, Vodafone and EE, 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 St Osyth (CO16) download speed at 71 Mbps.
Upgrade nudge
Room to upgrade in St Osyth (CO16)
Only 6% of the 7,900 connections here are on 300Mbps or faster, even though 70% 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 St Osyth (CO16) line runs 71 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 70% of St Osyth (CO16), and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does St Osyth (CO16) have?
Superfast broadband reaches 98% of St Osyth (CO16) premises but gigabit only 70%, so around 28% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in St Osyth (CO16)?
Outdoor 5G reaches 100% of St Osyth (CO16) 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 St Osyth (CO16) compares within Tendring
Across 7 postcode districts in Tendring, by connection count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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Speed and coverage figures for St Osyth (CO16)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.