I am writing an article for Time Out magazine on the increase of drink spiking cases since the smoking ban in London.

I would really like to hear from anyone urgently who has experienced drink spiking as a result of leaving their drink unattended to go for a cigarette in London.

I understand it's a totally sensitive subject, so I can guarantee complete anonymity and absolutely no photographs.

If anyone can volunteer their experiences and help raise awareness of this terrible issue, please email: katehutchinson@timeout.com

Kate