Found - book just purchased in Foyles Charing Cross, left on westbound central line train. Handed in to TFL lost property.
(Charlotte on 19 Dec 2019)
When: 16 Sept 2024
Where: notting hill gate station (51.5092° N, 0.1962° W)
I am 99% sure I lost my Issey Myiake pleats please jacket coming out of Notting hill station, its a black pleated buttoned jacket with three pockets

Could one of these be yours?