CurrencyPound sterling (GBP) Time zoneGMT (UTC 0) and BST (UTC+1) in summer Country code44 Postcode areasSL PostcodeSL1-SL3 Dialling codes1753 ClimateTemperate climate AirportLondon Heathrow (LHR) Airport Nearest Airport Official Websitewww.slough.gov.uk...