Wednesday:
Arrive into London after touring the Cotswolds by around 2-3:00 staying at the Travelodge Southbank
Tour Imperial War Museum open until 6:00
Thursday:
Westminster Abby
Walk by Big Ben/Parliment
(Been to Churchill War Museum skipping this time)
National Gallery
Concert evening at St Martin in the Fields 7:00
Friday:
Buckingham Palace Tour
Victoria and Albert Museum (open until 10:00)
Maybe a London Walk "Old Knightsbridge village and pub walk" 7:00
Saturday:
Tower of London
Borough Market area
Globe theatre tickets 7:00
Sunday:
British Library
British Museum
St. Pauls either Evensong at 3:15 or Organist at 4:45 (Sunday)
Monday:
Boat ride to Hampton Court
Train home
Early evening - flying out early morning flight Tuesday