The most lucrative postcodes for property in the UK have been revealed. The latest research by for sale by owner empowerment portal, OkayLah.co.uk, revealed the postcodes that generated the most cash in property sales in England and Wales last year. Over £250bn worth of residential property was sold in the last year. So where are the most lucrative postcodes in the UK? Related articles Through the Keyhole 2019: Inside the home of swimmer Rebecca Adlington Brexit news: Property for sale? Affordability and demand improve Property for sale: House prices in nation's most lucrative postcodes are booming despite latest Brexit news Most lucrative in England and Wales London with the capital also home to the largest amount of property sold across all regions, but it’s not in Kensington. SE1 covers parts of Hillingdon, Lambeth, Southwark and Wandsworth and saw just under £1.3bn worth of property transacted during 2018. The second highest was also in Wandsworth with SW11 enjoying over £1.1bn worth of property sales. Kensington does finally place third with £895.1m worth of property sales in the last year in W8. Despite London bearing most of the Brexit brunt, the top 15 most valuable property postcodes are all located in the capital. Most lucrative outside London The South East dominated the most valuable regions outside of London. BN3 in the South East, covering Wealden and Brighton and Hove, is home to the most valuable property market postcode outside of London with £554,290,855 worth of property sold in the last year. Property for sale: House prices in nation's most lucrative postcodes are booming (Image: GETTY) Property for sale: SE1 saw just under £1.3bn worth of property transacted during 2018 (Image: GETTY) Also in the South East and spanning parts of Slough, South Bucks and Windsor and Maidenhead is SL6, the second most valuable property postcode outside of London at £549,531,484. BN1 and BN2 in Brighton rank third and fourth and BA2 in the South West comes in fifth. Most valuable in other regions Outside of London and the South East/West, AL5 is the most lucrative in the East of England while SK9 is the North West’s most valuable. In the East Midlands, it’s LE12 while in the West Midlands it’s CV37. CF14 in Cardiff is the most valuable Welsh postcode, with HG2 in the North East and HU17 in Yorkshire and the Humber completing the most valuable postcodes in each region. Related articles Do YOU live in England's best town to buy a house? UK Property: Annual house price growth slowest for five years Property for sale: BN3 in the South East is the most valuable postcode outside of London (Image: GETTY) Property news: Where to invest your moneyMon, August 7, 2017 Property prices mapped: Where you should invest in the UK. EXPRESS•Getty 1 of 11 Property news: Where to invest your money Most valuable postcode in England and Wales SE1 - Southwark, London SW11 - Wandsworth, London W8 - Kensington and Chelsea, London SW18 - Wandsworth, London SW19 - Merton, London SW6 - Hammersmith and Fulham, London E14 - Tower Hamlets, London NW3 - Camden, London W2 - Westminster, London Most valuable postcode outside of London BN3 - Brighton and Hove SL6 - South Buckinghamshire BN1 - Brighton and Hove BN2 - Brighton and Hove BA2 - Bath and North East Somerset BS16 - Bristol BH23 - Christchurch AL5 - St Albans GL52 - Tewkesbury How can you add value to your property for sale? Lucy Alexander has given Express.co.uk some exclusive tips on how to get the most for your home. This includes creating space in the property and cleaning messy items away before viewings.All rights reserved for this news site express.co.uk and under his responsibility