Chris Shaw asks "Perhaps someone can identify" for his picture of an Aircraft Carrier. My money would be on Invincible. I've published a recent shot Invincibles twin, Illustrious here :
http://www.geograph.co.uk/photo/23695which shows some slight differneces in the superstructure, also Illustrious came out of a 2 year refit at the end of 2004, so she should have been in dock at Rosyth in July 2003. If you've got any pics from a different angle Illustrious is designated R06, and Invincible is R05. It could be the larger Ark Roayl, R07 but I don't think so.