Hi Jayne - Sorry I can't give you a personal recommendation. My husband lived in the UK for a few years so we're comfortable getting a car & driving ourselves. If you have chosen where you plan to stay in London, the concierge in the London hotel should have a list of guides and tours for you to consider. If you want the information before you go, a FAX or phone call should help you learn what tours are available, their length and their cost.

As another avenue of information, I located some information on the British tourist authority website. The link below includes a list of where find private guides who will meet your needs. There are also links at the bottom of the page to bus & coach tours.

http://na.visitlondon.com/city_guide/attractions/f_tours_private.html

If you like, consider taking the train (especially to Stratford on Avon) and arranging for a guide to meet you there. Do a google search & look for a Blue Badge guide (they have been qualified by the guide professional organization) in Stratford on Avon. The Cotswolds is more spread out & does require a car.

Hope this helps you and that you enjoy your trip. Both areas you are considering are lovely and worth seeing. Both of them are really a full-day tour. Cheers, Anne