15 providers offer 115 broadband deals in Castlethorpe, from £19 a month and up to 5,000 Mbps. Typical measured speed is 55 Mbps down and 86 Mbps up, 46% below the UK download average.
Deals for Castlethorpe, checked and refreshed daily.
Best value broadband deal in Castlethorpe
The best value in Castlethorpe on full first-year cost is toob's Home 900: £248 across year one, about £21 a month. At 900 Mbps it copes with anything a household runs at once.
Best value in Castlethorpe
£20/mo
rises to £22 in April 2027 (+£2)
Cheapest broadband deal in Castlethorpe
The cheapest deal in Castlethorpe is Explorer 300 from Gigaclear at £19.00 a month for 300 Mbps. It's full fibre, so the advertised speed is the speed that reaches the router. It also throws in a £30 gift card. toob is essentially level at £20.67 a month.
Cheapest in Castlethorpe
£19/mo
No rises, no surprises.
Runner-up on price
£20/mo
rises to £22 in April 2027 (+£2)
Fastest broadband deal in Castlethorpe
The fastest deal available in Castlethorpe is Full Fibre 5 Gigafast+ from Sky at 5,000 Mbps.
Fastest in Castlethorpe
£50/mo
No rises, no surprises.
Compare broadband deals in Castlethorpe
£22/mo
No rises, no surprises.
£25/mo
rises to £29 in April 2027 (+£4)
£22.99/mo
rises to £26.99 in March 2027 (+£4)
£19.94/mo
rises to £22.69 in April 2027 (+£2.75)
Broadband providers in Castlethorpe
15 providers serve Castlethorpe 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 Castlethorpe download speed at 55 Mbps.
Upgrade nudge
Room to upgrade in Castlethorpe
Only 13% are on 300Mbps or faster, even though 71% 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 Castlethorpe line runs 55 Mbps.
Working from home
OKStreaming and family use
OKWhat speeds are people actually getting?
Gigabit reaches 71% of Castlethorpe, and the fastest available is 1,000 Mbps. The full split by band is below.
What broadband coverage does Castlethorpe have?
Superfast broadband reaches 80% of Castlethorpe premises but gigabit only 71%, so around 9% of homes can get fast broadband but not the fastest.
Can I rely on mobile broadband in Castlethorpe?
Outdoor 5G reaches 100% of Castlethorpe 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 Castlethorpe, enough for a 5G home-broadband hub to stand in for a fixed line.
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Speed and coverage figures for Castlethorpecome 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.