Hi - sorry, have been kind of out of touch the last few days, so didn't notice your post had been kind of overlooked.

Given that you have EU nationality, you should DEFINITELY include that on your CV so there is no question about your immigration status. Mention your travel plans in the cover letter (it falls under the "availability" issue).

It was a long time ago, but when I was job hunting in Europe from California, I simply mentioned my availability for interviews in the cover letter ("I will be in the area after 5th August..." or whatever). Make sure your contact information is on your CV. I don't think there is much problem at this point, as summer is a slow hiring time anyhow.

You may want to look into getting one of those SkypeIn numbers in the UK. That way you'd have a "local" area phone number with an answering machine so they could contact you by phone if they want to.
Cheers,
Bev