I have been running a Sunday pub quiz at our local for the past two years but am desperate to find a new question source. I have exhausted Paul's and Pub Quiz's supply and would appreciate any help to find others. Here's hoping, many thanks.
You could try writing your own questions. After 2 years you should have an idea of the level and subject matter your participants expect, so pitch the questions accordingly.
You could also recycle some of the earlier questions (assuming you have kept them) - the participants probably won't remember them or think they have heard them elsewhere.