Prefatorily, if my comments about the RS England guidebook are wrong, someone please correct me, and my apologies to the RS staff.
But in the England edition I have, there is no mention of the American Military Cemetery outside Cambridge. The cemetery is beautifully maintained and moving. You can easily get that by buying on the X3 bus outside the Cambridge train station a round-trip ticket. It is our only military cemetery in the UK. It contains the graves of over 3,800 Americans; some of the graves have no names. Then there is a great wall showing the names of over 5,800 Americans who were killed in WW2 and whose bodies were never recovered (many in the air war over Germany and the Battle of the Atlantic).