British Airways (BA, London Heathrow) is set to base ten leased A320-200s out of London Gatwick where they will replace the airline's fleet of sixteen B737-400s. Though their exact origin and serial numbers have yet to be revealed, their British registry's will run sequentially from G-LDNA to G-LDNJ. Their exact date of entry into service is also unknown as of this posting.
Source, CH-AVIATION.