London, Aug 20 - Troubled British singer Amy Winehouse has gone back to her old partying ways as she was recently spotted drinking at a pub with an ex-boyfriend.

Thesun.co.uk reports that Winehouse was spotted with a runny nose, soaked top, burnt finger and dirty nails. She went to the pub, The Queens, in north London with her ex-boyfriend Kristian Marr and was joined by David Gest -- they had dinner and a lot of drinks.

'Amy couldn't even stand when she came in. It was only 8.45 p.m. Everyone at the bar was moaning about them being there,' said a source.