Buying a house can be very expensive, which is why it's sometimes good to find out what the average price tag for an area is. And now you can, with the most expensive postcodes in London already ...

The cheapest postcode was SE28. (Photo by Tim P. Whitby/Getty Images for Thamesmead) A postcode district in Thamesmead has been found to be the cheapest postcode district in London for property at an ...

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