~Liza,
Having a photocopy as cheeky^Wolf suggests is a good idea, so is Kez' suggestion to visit the US consulate if circumstances allow.
In the absence of either, the immigration office at the POE will know that he is a LPR and he will be allowed into the USA - as long as the airline will let him board the plane so he can get to the POE. It's the airline that might be your problem.
Yodrak
QUOTE(lizaanne @ Jul 12 2007, 02:35 PM)

Just want to be prepared for anything - what if Simon looses his green card while we are in England? What would we need to do to ensure he can get back home in the US?
Yep - I'm a worry wart.
~Liza