Titanic: Adventure Out Of Time-This game is definately recommended by me. I love this game. It takes concentration, strategy, and alot of notepaper. (2 cd set sold at most computer software stores for a minimum of $12. I don't know the price in pounds)
Total Titanic-This is also a book both are very interesting, I learned alot, and I loved the book.(Sold at most computer stores for about $20-40)