Lie-in King, and others. I always find the Saturday Times very hard but seem to manage the Sunday one OK. I also manage the Guardian most days, and I am getting to grips with the i paper.
Out of curiosity, where would you put the Sat Times puzzle, on a 0-10 scale?
Sorry Mikey, only just seen your reply. A scale of difficulty is hard to balance IMO as the compilers change so frequently.
At a general & personal level, I'd put the Sat Times (not the Jumbo, I presume?) anywhere between 5-8. I suppose my average time would be about 15-20 minutes, but it could be double that for one of the trickier puzzles.
Apologies for a less than definitive answer, but it's very subjective. :-)