"I think, if you managed to make a time machine, then you'd find yourself getting a visit from some future cops, just before you get too carried away".
Too true, or you could really stir up some trouble.
It could be like Bill & Ted's Excellent Adventure, gambolling throughout time checking out the bods that float your own particular boat. Not sure about the phone box though.
You could be behind the grassy knoll, in the Pont de l'alma tunnel, (briefly) in the cockpit of a hijacked jet, at a Bilderberg meeting. The possibilities...
But if time travel only takes you forward or backward to another dimension, parallel/baby universe, (basically anywhere but where you came from) then there would be hardly any point going would there, other than for idle curiosity?
That to me seems more likely, if only because it removes the problem of the consequences of accidentally killing your own ancestors, or becoming your own grandfather. Travel as a read-only experience, and then into a world the only thing you can be sure of is that it is NOT identical to the one you just left.
I'd still like to look though. Shit, maybe there's a place where my footie team are half decent?