Get the East Enders episode when Mel gets back from being kid-napped by Dan. Go to the bit where she calls Steve a liar, after he says he's never been tempted with another girl. You will see when she goes to the kitchen she fills her glass up with vodka nearly to the top. She then picks up another bottle so she can put some of that in it, but when she goes back into the living room, her glass in no-where near as full as it was.