I am soon due to relocate to London from York

(have spent 6 months in York and have loved it - northerners are pretty good people)
Anyway, I will need to return home with my brew and am getting concerned about all the sloshing about of the beer in my Keg - Will this not aerate my beer big time, resulting in it going stale rather quickley?
Any advice, other than drink it fast?
Cheers