Getting to London from Ipswich is trying at the best of times so I suggest you plan your route. Abellio Trains enables you to get there quickly and easily, but its expensive!
GoEuro provide cheap tickets by bus and by train, don’t just go to the first website you see. You could end up spending more than you should have.
I have found it, the best way to get to London is by Scooter!
(This post is for an exercise in uni-I am not going bananas)
I have found it –The Worst Journey and going to London even by bicycle is easier than this!