I believe Hangar 3 is charging £10 handling fee but this is not mandatory as the Airport do not charge for handling under 6 tonnes.
When I went to Blackpool a couple of Saturdays ago with a friend, we were duly informed by Hangar 10 that handling will be mandatory for all aircraft and that you will require PPR aswell
The landing fee was £39 aswell, which included a £10 handling charge, even though we didn't ask for handling.