I was on a very busy tube on my way to work a few months ago at about 8.30am when I felt the back of a hand pressed against my groin. I felt uncomfortable but brushed it off by assuming the man wasn’t doing it intentionally. When the tube cleared a little I moved a couple of steps where there was more space, a couple of minutes later I felt something stroking the inside of my thigh (I was wearing a dress). I turned around and the same man had moved right behind me and it became obvious that he had been touching me. I glared at him and he got off at the next station.
It affected me for the rest of the day, a mix of disbelief of what had happened and annoyance with myself for not calling him out.