I've had a session or 2 with all of these MILFs.
Helena Hart was the most memorable - she wore some great lingerie and offered all services. I didn't particularly click with her though and never went back before she retired.
Lorna looked great when I first saw her in Crystal Palace over 10 years ago. I saw her again when she was with mature Kensington escorts. Nice lady, but no way worth the £250 an hour she charges now.
Audrey is much cheaper, not quite as well preserved, and EE (Helena's English / Irish and Lorna's Scottish). I had good sessions with her when she was in Olympia.