Originally Posted by Gaza
You cannot use the T1 or T4 MB Spa when flying to Europe. You can use it on your return LHR-XXX (SEA or YVR???).
Whoops. I just started comprehending from the "travelling in First" bit
All is not lost though, you will be able to use the ARRIVALS lounge after your FIRST flight into LHR, where there are some MB treatments available. Assuming it hasn't closed, that is...depends what time your flight gets in.