Petrol prices in HP21
Every forecourt in the HP21, Hemel Hempstead postcode district, cheapest first, with live prices from the government Fuel Finder feed — covering Buckinghamshire, South East.
HP21 has only 2 forecourts, so there is no comparison to make within the district itself. The HP area page covers the surrounding districts, which is where a cheaper option would be.
Petrol stations in HP21 (2)
Cheapest first. Prices update through the day.
ESSO, AYLESBURYCheapestAYLESBURY£1.68E10£1.90B7ESSO, AYLESBURYAYLESBURY£1.70E10£1.96B72.0p separates the cheapest and dearest forecourt inside HP21 alone — £1.10 on a tank, without leaving the district. That is usually a bigger saving than any amount of waiting for prices to move.
Is anywhere nearby cheaper?
Neighbouring districts, with the fuel the drive itself burns already subtracted — a 45 mpg car, there and back.
HP19Hemel Hempstead2.8 km away · 3.5 mile round trip · 4 forecourts£1.56saves 11.0p a litreHP22Hemel Hempstead2.5 km away · 3.1 mile round trip · 5 forecourts£1.65saves 2.1p a litreHP20Hemel Hempstead1.0 km away · 1.2 mile round trip · 2 forecourts£1.66saves 1.6p a litreThe saving shown is what is left after the detour: the pump price plus the extra fuel burned getting there and back, spread across a 55-litre fill. A forecourt that is 4p cheaper eight miles away is not 4p cheaper. The arithmetic is here.
Nearby postcode districts
Closest first, with today’s typical price.
About fuel prices in HP21
HP21 is part of the HP postcode area, which covers Hemel Hempstead, and its forecourts sit mainly in Buckinghamshire in South East. We track 2 forecourts here across 1 brand.
There is no supermarket forecourt in HP21, which usually shows in the price: supermarket sites anchor local competition, and districts without one tend to run dearer than neighbours that have one. Across South East as a whole the median is £1.72 — see the whole region.
Every price here comes from the government Fuel Finder scheme, which since February 2026 has required each forecourt to report a change within thirty minutes. For the forecourts nearest a specific address rather than a whole district, search your full postcode.
Common questions about HP21
How much is petrol in HP21 today?
The typical HP21 forecourt is charging £1.69 a litre for E10 petrol — £92.89 for a 55-litre tank. The cheapest of the 2 forecourts reporting a price in HP21 is at £1.68, and the dearest £1.70.
Where is the cheapest petrol in HP21?
ESSO, AYLESBURY in AYLESBURY at £1.68 a litre. That is 2.0p below the dearest forecourt in HP21. Prices change through the day, so check before you set off.
Is HP21 cheaper or dearer than the rest of the UK?
HP21 runs 1.0p below the UK median of £1.70, and sits in South East, where the regional median is £1.72. Local competition drives most of that: districts with two or more supermarket forecourts close together price lower than districts where the nearest alternative is a drive away.
Is it worth driving to a cheaper postcode from HP21?
Right now, yes — HP19 has fuel at £1.56, and even after the 5.6 km round trip burns its own fuel, you are about 11.0p a litre better off. That is roughly £6.05 on a tank. Anything closer than that is not worth a special journey, though it may be worth routing past.
How many petrol stations are there in HP21?
2 forecourts, from 1 different brands. Every one reports its prices to the government Fuel Finder scheme within thirty minutes of a change.