Kate Beckinsale: UnderWorld ... Single Life Awakening

Kate Beckinsale knows how to telegraph .... she's making it clear she'll have no problem finding a new man now that her 11 year marriage to hubby Len Wiseman is all but over.

Kate locked hands with a dude as she left Monday's British Fashion Awards in London ... and they were all smiles.

Both she and Len have been hitting the town sans wedding ring, and Len's gotten real chummy with a 24-year-old model.

Clearly game over.