Thanks folks!
Sarah, use an average 400D with a kit lens (28-55mm and 75-300mm).
I bought the 75-300mm lens on Boxing day last year at a really good price for the purpose of photographing aircraft. Now I realise I need an even better lens now preferrably something that goes to 400mm.
And also, anyone wanna split for a boat hire to go at the end of 34L?