Where is your starting point? If it's Birmingham, I suggest that first you can stay in Birmingham for 3 days, then your second stop is Oxford for 1 day, the third stop is London for 7 days, you can have a great London tour for 5 days, 1 day for Bath, 1 day for Cambridge. You also can go to windsor Castle, Eton College and Greenwich observatory near London.
The title and the content in your post is totally irrelevant. What is your question? For the question in your title, London is the most convenient place from where you can travel to Ox, Cam and Bath. With in 1 hour by train.
For the question in your title, London is the most convenient place from where you can travel to Ox, Cam and Bath. With in 1 hour by train.
But where can I take the train?
How to book it?