24 providers offer 314 broadband deals in Sydenham, from £13.50 a month and up to 7,000 Mbps. Typical measured speed is 80 Mbps down and 21 Mbps up, 21% below the UK download average.
Best value broadband deal in Sydenham, South Oxfordshire
The best value in Sydenham, South Oxfordshire on full first-year cost is Plusnet's Full Fibre 145: £292 across year one, about £24 a month. A £155 reward card is bundled in. 145 Mbps covers streaming, video calls and working from home.
Best value in Sydenham, South Oxfordshire
£22.99/mo
rises to £26.99 in March 2027 (+£4)
Avg £26.32/mo over contract · £632 total over 24 months
Fastest broadband deal in Sydenham, South Oxfordshire
The fastest deal available in Sydenham, South Oxfordshire is You 8000 from YouFibre at 7,000 Mbps. Next fastest is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in Sydenham, South Oxfordshire
£99/mo
No rises, no surprises.
£1188 total over 12 months
Runner-up on speed
Full Fibre 5 Gigafast+
3000 Mbps upload · Full Fibre
Best for power users & big households
£80/mo
No rises, no surprises.
£1925 total over 24 months
Cheapest broadband deal in Sydenham, South Oxfordshire
The cheapest deal in Sydenham, South Oxfordshire is 150Mbps Full Fibre (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. Next cheapest is Rise Fibre at £18.00 a month. Above the UK average on download.
Cheapest in Sydenham, South Oxfordshire
150Mbps Full Fibre (24 Months)
150 Mbps upload · Full Fibre
Best for 2–3 person homes, 4K streaming
£13.50/mo
for 12 months, then £18/mo
Avg £15.75/mo over contract · £378 total over 24 months
Runner-up on price
150Mbps Full Fibre (24 Months)
150 Mbps upload · Full Fibre
Best for 2–3 person homes, 4K streaming
£18/mo
for 12 months, then £23/mo
Avg £20.50/mo over contract · £492 total over 24 months
Compare broadband deals in Sydenham, South Oxfordshire
150Mbps Full Fibre (24 Months)
150 Mbps upload · Full Fibre
Best for 2–3 person homes, 4K streaming
£18/mo
for 12 months, then £23/mo
Avg £20.50/mo over contract · £492 total over 24 months
£29/mo
rises to £31 in April 2027 (+£2)
Avg £30.50/mo over contract · £732 total over 24 months
Sky Full Fibre Gigafast
100 Mbps upload · Full Fibre
Best for power users & big households
£31/mo
No rises, no surprises.
£749 total over 24 months
£19/mo
No rises, no surprises.
£342 total over 18 months
Broadband providers in Sydenham, South Oxfordshire
24 providers serve Sydenham, South Oxfordshire, with YouFibre the fastest at 7,000 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 Sydenham, South Oxfordshire download speed at 80 Mbps.
Upgrade nudge
Room to upgrade in Sydenham, South Oxfordshire
Only 5% 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 Sydenham, South Oxfordshire line runs 80 Mbps.
Working from home
OKStreaming and family use
GoodWhat speeds are people actually getting?
Gigabit reaches 89% of Sydenham, South Oxfordshire, and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Sydenham, South Oxfordshire?
The wholesale networks carrying Sydenham, South Oxfordshire broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
Real altnet coverage in Sydenham, South Oxfordshire, not the press release version. The list comes from who is actually selling deals at addresses here, network by network.
- CityFibre: Sky, TalkTalk, The One Broadband, Vodafone, Zen Internet
- 4th Utility: 4th Utility, Rise Fibre
- Hyperoptic
- BeFibre
- Zzoomm
Of the major networks, Openreach and Virgin Media O2 are also live here (Openreach is on every street, so the interesting variable is the altnets).
Today's live count in Sydenham, South Oxfordshire: 24 providers on the page.
What broadband coverage does Sydenham, South Oxfordshire have?
Superfast broadband reaches 99% of Sydenham, South Oxfordshire premises but gigabit only 89%, so around 10% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Sydenham, South Oxfordshire?
Outdoor 5G reaches 97% of Sydenham, South Oxfordshire homes. Here is how mobile holds up if the line drops.
More areas in South Oxfordshire
Nearby areas
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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.
* Based on Go.Compare research estimating that 28% of UK broadband users pay for faster broadband speeds than they need (which we interpret as overpaying), equivalent to around 7.5m UK households.
Speed and coverage figures for Sydenham, South Oxfordshirecome 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.