Wowcher

Mostly wow. But not for booking classes!

I've had a good experience with Wowcher. Things straight forward to redeem and doing what 'it says on the tin'.
But any classes that are advertised are hopeless. Invariably when you go to book, they're all booked out by their regular (non-wowcher) customers who have block-booked out their regular slots weeks in advance. So you can't get a place and your wowcher expires without ever being able to go to the class. A waste of money. And infuriatingly frustrating. I never purchase such things now...
Otherwise I love wowchers!