I suspect the original enquiry has been answered. This is a more general response to where to glide. The key factors are:
Professional staff, so you aren't driving winches or mowing the grass
Large airfield, which is much safer
Winch and aerotow launches
Well-drained airfield, ie always open
364 days a year operation
Large heavily-subsidised youth contingent
Restaurant & bar
Large fleet of well-equipped and maintained two-seaters and single-seaters, plus a big team of instructors so you don't hang around waiting
Reliable equipment such as new winches
Bookable training
Judge the various gliding sites using these criteria, but include Lasham in Hampshire in your search. It has 132 members under the age of 26.