Originally Posted by
joshwex90
IME with BA, that's what you'll need to do. Overnight connections at LHR, planned that way or not, you treat as a stopover and not connection meaning claiming your bags and clearing passport control, and returning the next day as if starting your journey ex-LHR.
+1 -this is how it should work - but my advice is to ask LX at check in what will happen to your bag as they are the ones tagging it - if it is tagged all the way through I honestly think you may not see it at Heathrow...