Used 3 for 2 offer Westland peat free last year until I ran out, then used a few bags of Lidl peat free.
Westland came recommended and was ok, Lidl was also ok. Both had some woody bits in which had to be removed though :( I also found a bit of glass, which was bad, but I can't remember which one that was in.
B and Q the year before was really grim and the plants didn't do well. Not sure whether I got an old couple of bags and whether they have improved, but i wouldn't buy their peat free again.