I am going to London in mid November and shopping for some antiquities or collectibles in Portobello and some other flea markets is one of my major destinations. I dare not place those fragile glasses in my check-in luggage. Will I have any trouble at the checking station on my departure from Heathrow if I carry the collectibles in my carry on bagage? I am from Bangkok and this is my first visit to UK. I will fly THAI AIRWAYS.