If you're into your trains then I suggest you save up a few hundred quid and goto India next summer. Nowhere in the world have I ever seen such a celebration of diversity, romance, history but also poverty and hardship. If you like trains, A 36hr journey on sleeper class from Madras to Delhi (or similar cross country) will be one of the best experiences of your life! The sounds, the smells,the songs, the food, the 1km+ long train, the ~1500 passengers, the horn, the beggars, the toilets...everything!
Trains in this country (England) used to be fun but ever since the old british rail Intercity trains were replaced they just became too boring and business like