It was a superb concert, a sort of 50th Anniversary gig, as she first performed at Wigmore in 1971. It was broadcast live on BBC Radio 3 and on Wigmore Live, can be streamed from Wigmore and BBC Sounds (if you have access).
She was also presented with the Wigmore Medal from the Duke of Kent. Her speech was mostly about the Mozart sonatas, which I listened to this afternoon. She explained she recorded them because at the time everyone was doing Schubert and it was a toss-up (literally) between Schubert and Mozart, Mozart won, even though - as she said - the early ones aren’t very good. So she played them at Wigmore and recorded them, and then Amadeus came out and Mozart was all the rage and she was in demand.
In those days I remember going to hear her play the Mozart concertos with Jeffrey Tate and the English Chamber Orchestra at St Johns Smith Square and the Festival Hall. Then, the main competition in London was Brendel and Perahia, similar repertoire, although Perahia also played the Romantics. Her more recent Schubert recordings are a tour de force, but to hear all the Impromptus was great. I favour the first set for their almost unremitting gloom.