Excellent. Very excellent!

Some interesting ideas here! I will definitely quibble with your explanation of 22/7, though I understood the link. "Historical approximation of..." could be a more accurate description.

Easy time? Far from it. In fact if it hadn't been for my glamorous assistants Angela and Jacinda remarking on the coincidental inclusion of their names while attending to my poolside massage your return from Parkhurst would have gone unnoticed in my busy day. As it is , welcome! Any idea when Wiz's case comes up for parole?

Agreed. Good one!

5/10 Tough one..the definite article in the Queen clue as off-putting, liked the concept, some nice crossovers (the Queen guitarist for one)

great grid

Thank you all, very encouraging.
Toast: How odd that your two masseurs should be Angela and Jacinda (Does Angela look like Angela?)... With regards to Wiz... listening to the cursing coming from the cell next door would suggest its going to be a while, keep sending the food parcels.

The groups were obvious, but selecting the right members for each group was tricky.

Great grid

definitely have a problem with your definition of 22/7. How can it be an equation when there isn't an equals sign? Pi cannot possibiy be equal to 22/7 since pi is an irrational number. 22/7 is used as an approximation.

nice crossovers, ty