Posting here because there is no UK forum.
I know that railpasses do not usually prove cost-effective, and we did better in Italy and Spain with advance-purchase tickets. I was thinking of doing that for an upcoming trip,to the UK. This is a girls' trip with my sister and two of her friends. but then I looked at the BritRail Pass for 4 people traveling together. We are doing several long trips ( like London to Edinburgh to Inverness to Oban to Glasgow to xxx to Cornwall to London). I added up the separate costs, using advance purchase prices and senior discounts for the older girls. The pass comes out cheaper for first class, but not for second. We would like to travel innFirst on the longer trips.
Is there a hidden cost to using this pass? This website (RS) says reservations are free for passholders. Are there any other hidden costs or cautions that I should consider?