Thanks, Ron
I'm unlikely to be able to use my ticket for this recital tonight (Tchaikovsky/Rachmaninov/Medtner - details:
https://www.barbican.org.uk/music/event-detail.asp?ID=6760). It's front row of the balcony, and should have a good view of both performers. Full price £15, but I got it for a discounted £12, so would be happy with that. (There are still a few seats available, but only at the top prices).
Could do a handover in Covent Garden late this afternoon, or meet you there if necessary.
NB: I am advertising this at work, too, so it may not hang around for long.
I've temporarily reset my email to my work address, so please use that to contact me, as I may not be able to get onto the site when required.