Only 6 full days?

Get the RS London book.

Figure out what you want to see and do. Oxford is just over an hour away by train.

You can take a day trip from London to Bath by direct train (1h 30m).

You can go to a number of places as day trips from London; Oxford, Cambridge, York, Bath, Canterbury, Brighton, and Hampton Court. No need to change hotels.

I agree with everyone above. Stay put in London and do the day trips. The places you want to go are not far away and worthy of the day trip.

I love Bath and easily spend 3-4 nights there. I do understand people’s recommendations to just do a day trip when you have such a short time in London.

If you’ve not already bought your Dublin London flight, you could consider Dublin -> Bristol and then a short journey by train to Bath for 2 nights and on to London for your final 4. I’d want to be in London or Windsor the night before your departure flight.

Over the years, I've done day trips to Oxford, Cambridge, York, Bath and Hampton Court. Add to the list......Windsor.

Stay put in London. Much easier than changing hotels.

Cambridge and Windsor are both great day-trips from London.

There is nothing wrong with spending a week in London and doing day trips, but your idea of splitting your time between two places is also a good one. I don’t find changing hotels to be a problem. I would definitely choose Bath over Oxford, and I think spending two or three nights in Bath would give you a completely different and more relaxing experience than London. Bath is a beautiful place to walk around, and the Roman Baths are fantastic

Between London, Bath, and Oxford, you really can’t go wrong.

Bath is a bit much to do a day trip. I suggest at least one night in Bath. The Brooks Guesthouse is in a great location. Also, The Scallop Shell Restaurant nearby has the best fish and chips in England.

York, Cambridge, Oxford, and Bath are very different. Your choice should depend on what intrigues you about England. Bath is the choice if you are into Jane Austen and Georgian England. And the Roman baths are very very interesting. However, York is the choice if you like medieval England and the landscapes you see in All Creatures Great and Small. It's a two hour train ride from King's Cross. If you are OK with renting a car, York would give you the most variety. Stay three nights, spend one day driving over to the coast to see Whitby and Robin Hood's Bay, the other day driving around the Yorkshire Dales. Many ruined abbeys and castles in the area, you could add one in each day. Spend your evenings and early mornings poking around York - the Shambles are an interesting walk, Yorkminster is gorgeous and has a very interesting crypt area, and walking the ancient walls is not to be missed.