My meeting at Westminster Abbey finished marginally sooner than I’d expected, giving me time to find one more London cache before getting on a tube at St. James (and eventually onto a bus back to Oxford). I opted for this one, and spent a little while looking at exactly the hiding place while I waited for a man having a smoke right in front of it to finish and wander off! Bit of a tight squeeze out of and into the hiding place, but not a hard find. TFTC!
(My 300th find!)