I am travelling from Germany to the USA and I have a 1h30m layover in Heathrow. I arrive at terminal 5 and leave at terminal 3. Originally I booked the ticket with no checked luggage, but now I am thinking that I will have to to carry Christmas presents for my family.
From what I understand, I will have to claim my bag and then go through customs in the UK before continuing on. I am wondering if I realistically have enough time to do this, since Terminal 5 and terminal 3 are not in the same building, I will have to take a tram.
I am also not an EU resident and so I will have to stand in the "long line". Is this a realistic timeframe? And if I were to miss my flight because of it, would I be stuck paying for another one?