I hate to be the voice of doom, but these shots won't make it in.
There are quality issues with both of them. The Easyjet shot is soft and there is visible compression, and that jpeg compression is apparent in the Thomson - you can see it all around the lettering of the 'Thomson', for example.
Sorry - looks like this may be due to the quality of the original files.
P.S. Sorry Tom - I slightly misread your inital post. In answer to your question, I am afraid that I can't see that there is anything you can do to get these shots up to scratch.
[Edited 2006-03-24 21:20:56]