SL postcode area

These cover east Berkshire (including Slough, Maidenhead, Windsor and Ascot) and south Buckinghamshire (including Iver, Gerrards Cross, Marlow and Bourne End), plus a very small part of south-west Hertfordshire.

Mail for this area is sorted in Greenford (Green Park Way).

The approximate coverage of the postcode districts:

In 2008, a group of residents in the Royal Borough of Windsor and Maidenhead campaigned to have Windsor and Maidenhead's SL postcodes replaced with WM postcodes, claiming the association with Slough affected the towns' statuses as "desirable places to live".

Royal Mail later stated that the campaign would be "unlikely to succeed".

SL postcode area map, showing postcode districts, post towns and neighbouring postcode areas. GU postcode area HA postcode area HP postcode area KT postcode area RG postcode area TW postcode area UB postcode area WD postcode area
SL postcode area map, showing postcode districts in red and post towns in grey text, with links to nearby GU , HP , KT , RG , TW , UB and WD postcode areas.