Wet wipes/hand sanitiser One of the perils of travelling by public transport, you never know when you're going to touch something unpleasant.
Pocket rocket vibrator Oh, don't look at me like that. Sometimes a woman gets frustrated during the course of her day and needs to get herself off in the bathroom!
Spare pair of glasses I'm as blind as a bat without my glasses, and I don't get on with wearing contact lenses all day. Spare glasses are essential as a 'just in case'
Hair accessories Ive always got a couple of hair grips and a band or two with me. London can get very humid at times and avoiding bad hair day frizz is always handy
Tablet computer For working on the go
That's not to say those are the only things in my purse, but those are definitely among my essentials.