Hayling Island now has 2 areas for landing and launching. One area you have to pay for but the other is a FREE Havant Borough Council / BKSA land and launch zone.
There is a Facebook Page for regular updates about the zone but you can simply turn up at any tide and kite from there at your own risk. You should have your own insurance. There is good a local scene here and a lot of people self launch from the sign posts.