OK, progress - 100k Amex points/100k Virgin Miles gets you from LAX to LHR return in Upper Class with the limo etc. You have to pay the tax tho, $800.

Problem is we have left it too late for a September 1st departure.

Either delay the trip or try another airline I guess.

Someone mentioned Air Canada as an option, my question - is there a way to search points redemption availability online or do I have to call each airline and check manually?

2nd question - which other airlines offer a favourable transfer rate from Amex points to miles for 1st class travel LAX - LHR?

Thanks!