When I moved back to the UK after living in the US for several years and accumulating about 1,200 hours on mostly single engine Cessnas and Pipers, I started flying Pups (150 and 100) and Bulldogs with Skysport, which at that time had operations at Elstree and North Weald. I flew them fairly extensively for some years before buying a share in a Tiger.
They were an absolute joy to fly and much more of a "pilot's plane" than the PA28. It was really a plane that was strapped to the pilot's back and was very responsive. As others have said though, it not great on speed and gets a bit uncomfortable on longer legs (then again so does anything). Also, I found that the occupant of the rear seat in a Pup 150 seemed more prone to air sickness than in a PA28.
That being said, the PA28 is also a lovely plane to fly and is perhaps a better choice if you regularly fly longer distances. It really depends on what you requirements are.
I believe Skysport is still quite active at North Weald and Kemble.