Originally Posted by
bibbju
Given that the OP only has 6 days (actually, only 5 full days) and is going to Paris for one of those days, I wouldn't waste time on a day trip to the Cotswolds, especially not in October! In fact, with the exception of the Paris day, I would concentrate on staying in London and not spend time travelling to places outside the city. There is so much to see it and do in London alone, trying to then start seeing other places in the UK is just going to turn it into an experience to be endured rather than enjoyed.
I agree with this, stay in London. Even spending one in Paris might be a little disappointing when you look back on it later, but if it's a must-do, then fine.
OP - October can be nice in London. Walk through Hyde Park, see a play, eat in a pub while enjoying a pint or two. Do a little shopping, even if shopping isn't your thing. Eat Indian food, especially a late night curry. And I think the Tower of London is impressive, even though it's touristy.