Originally Posted by Cris L
Isn't London now one of the stations where you can upgrade on Day of Departure ? Although I doubt it would be at the Holideck, but suspect it must be done either at checkin or at the ticketdesk.
Sadly, no. When I asked about upgrading at checkin last month, I was informed that there were no actual KLM staff at LHR, so it wasn't possible. I had stay in coach LHR-AMS (no big deal) to wait til I got to AMS to upgrade my transatlantic leg at the Crown Lounge.