Pilates is great, but I think there is great variation in the practice. Some tutors are holistic practitioners and are as accomplished as osteopaths, others have done a Level 3 (equivalent to A level) qualification in teaching exercise classes based on Pilates. I agree that fitting classes into a variable work pattern can be a challenge, I've found that.

Yes, Knighton Park and the nearby village centre which still has some very old buildings are interesting historically. As well as the evidence of medieval farming, it has a spinney, I don't think it's ancient woodland, but it is several hundred years old. The southern part of the park has shallow field reservoirs and forms part of the flood defences for that area of the city - playing and event fields when it's dry and muddy water tanks when it's not.