If a trial lesson on the Tiger Moth is £90 for 40 minutes I assume that a 1hr lesson will be £135. You could get an hour and twenty minutes on a C152 at Cambridge for that (and rather more time elsewhere).
45 hrs on the Tiger Moth for £6075 or on a C152 for £4680? Is the undeniable joy of flying the Tiger Moth really worth £1400 during those early training days?