Ah, look at all the lonely ladies; where does one start? Most of the females of Walford have, at some point, been left high and dry, with only a fag and a vodka for company.
Peggy Mitchell has been a Valerie (Singleton) for too long, the last time she had a twinkle in her eyes was when Jack Edwards was around. It seems obvious that he's not scheduled to return, so who else could be a contender?