Well, after looking over the other recent post for a 15 day itinerary, it inspired me to post mine for any suggestions when we are there in June. We are driving.
7 days London (seeing King Tut exhibit, Avenue Q and lots of museums and unusual restaurants)
1 day Salisbury (stopping by Bath on the way to Cardiff the next day)
2 days Cardiff (I wish we could stay more--I like this town)--see friends, castles and St. Fagan's.
1 day in Harlech (well up the Welsh coast--for the castle--this is a very long drive from Cardiff)
1 day in Conwy (castle and maybe head to Snowdonia--particularly if we are "castled out" by then)
1 day at Hadrian's Wall (my daughter is an ancient history freak, like me, and, if time allows, stop at Keswick for the stone circle)
1/2 day at the Highland games in Ceres, Scotland
2 1/2 days in Edinburgh
Final day--leave the UK from Edinburgh and plan on return trip!
I know this is VERY busy with lots of driving--good thing I picked a time when gas prices are so low (yeah, right)!