Originally Posted by
OffToOz
You may have to collect your luggage in LGW and proceed through customs and then redeposit your luggage on a belt to be forwarded on to your connecting flight. Again, you'll be told exactly what to do. Just follow the crowd and ask someone official looking if you have any questions.
No. This is the US system, it doesn't work this way in the UK (or most places). Your bag will be checked all the way to EDI, you will not see it until then. Same for the return - you will check it in at EDI and you will see it in the US when you arrive. There is no opportunity to put things in / take things out at the connecting point unless you only check the bag part of the way and go out to baggage claim and retrieve it, followed by checking it in.