19 providers offer 192 broadband deals in Ystrad Mynach, from £20.00 a month and up to 7,000 Mbps. Typical measured speed is 59 Mbps down and 15 Mbps up, 42% below the UK download average.
Best value broadband deal in Ystrad Mynach, Caerphilly (CF82)
The best value in Ystrad Mynach, Caerphilly (CF82) 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 Ystrad Mynach, Caerphilly (CF82)
£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 Ystrad Mynach, Caerphilly (CF82)
The fastest deal available in Ystrad Mynach, Caerphilly (CF82) is You 8000 from YouFibre at 7,000 Mbps.
Fastest in Ystrad Mynach, Caerphilly (CF82)
£99/mo
No rises, no surprises.
£1188 total over 12 months
Cheapest broadband deal in Ystrad Mynach, Caerphilly (CF82)
The cheapest deal in Ystrad Mynach, Caerphilly (CF82) is 300Mb Full Fibre (24 Months) from 4th Utility at £20.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. The £20.00 is an intro price that rises to £40.00 a month after the intro window, making the real first-year cost £240. Onestream is essentially level at £20.63 a month.
Cheapest in Ystrad Mynach, Caerphilly (CF82)
300Mb Full Fibre (24 Months)
300 Mbps upload · Full Fibre
Best for 4–5 person households, heavy use
£20/mo
for 12 months, then £40/mo
Avg £30/mo over contract · £720 total over 24 months
Runner-up on price
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Compare broadband deals in Ystrad Mynach, Caerphilly (CF82)
£21/mo
rises to £24 in April 2027 (+£3)
Avg £23.25/mo over contract · £558 total over 24 months
Full Fibre 1.6GB Premium
115 Mbps upload · Full Fibre
Best for power users & big households
£33.99/mo
rises to £37.99 in March 2027 (+£4)
Avg £37.32/mo over contract · £896 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
Onestream Fibre 55
10 Mbps upload · Hybrid Fibre
Best for small homes, single 4K streamer
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Avg £22/mo over contract · £528 total over 24 months
Broadband providers in Ystrad Mynach, Caerphilly (CF82)
19 providers serve Ystrad Mynach, Caerphilly (CF82), 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 Ystrad Mynach, Caerphilly (CF82) download speed at 59 Mbps.
Upgrade nudge
Room to upgrade in Ystrad Mynach, Caerphilly (CF82)
Only 3% of the 5,500 connections here are on 300Mbps or faster, even though 75% 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 Ystrad Mynach, Caerphilly (CF82) line runs 59 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 75% of Ystrad Mynach, Caerphilly (CF82), and the fastest available is 1,000 Mbps. The full split by band is below.
Which broadband networks reach Ystrad Mynach, Caerphilly (CF82)?
The wholesale networks carrying Ystrad Mynach, Caerphilly (CF82) broadband, from Openreach to Virgin Media and the altnets, read off the live deals.
These are the alternatives to Openreach in Ystrad Mynach, Caerphilly (CF82): smaller infrastructure firms that have laid their own fibre. The pricing pressure they create is good news on a Saturday morning bill review.
- CityFibre: Sky, The One Broadband
- 4th Utility: 4th Utility, Rise Fibre
- Airband
- Netomnia: YouFibre
On top of the altnets, Openreach also serve Ystrad Mynach, Caerphilly (CF82) (Openreach is everywhere in the UK by default).
There are 19 providers on the live deal list for Ystrad Mynach, Caerphilly (CF82).
What broadband coverage does Ystrad Mynach, Caerphilly (CF82) have?
Superfast broadband reaches 98% of Ystrad Mynach, Caerphilly (CF82) premises but gigabit only 75%, so around 23% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Ystrad Mynach, Caerphilly (CF82)?
Outdoor 5G reaches 100% of Ystrad Mynach, Caerphilly (CF82) homes. Here is how mobile holds up if the line drops.
5G & 4G home broadband
Outdoor 5G covers 100% of Ystrad Mynach, Caerphilly (CF82), enough for a 5G home-broadband hub to stand in for a fixed line.
How Ystrad Mynach, Caerphilly (CF82) compares within Caerphilly
Across 6 postcode districts in Caerphilly, by premises count, typical speed and gigabit coverage.
Nearby areas
Frequently asked questions
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* 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 Ystrad Mynach, Caerphilly (CF82)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.