Official Gatwick Parking has two deals for anyone looking to pre-book the airport-run car parks this Summer.
The 15% discount was due to end on 20th July but has now been extended. You can get the discount on long-term Gatwick parking where you enter by 1st September.
For later dates, or for discounts on short-stay and Premium, the 10% offer still runs:
Via this link (click) you save 15% on the official long-stay car park for entry dates up to 1st September.
Via this link (click) you save 10% on long-stay, short-stay and Premium, valid for any dates to 31st March 2019