( CM ) - Pop star LILY ALLEN no longer enjoys partying in London - because she has little in common with her fellow clubbers now she's quit alcohol. The British singer cut down on her alcohol intake in December (07) when she discovered she was pregnant with her then-boyfriend Ed Simons' baby. Allen suffered a tragic miscarriage in January (08), but chose to continue with her sobriety - even though it has isolated her from her pals. And the 22-year-old admits she is starting to get sick of her own company. She says, "I've been sad and quite lonely recently because if you're young, living in London and working in this industry, unless you drink and take a lot of drugs, there's not much to do. "I've been sitting on my own watching TV. It's boring to go out if everyone else is taking cocaine and shouting at me."