I think the Smith sighting at around 10pm, is more significant and reliable than the earlier Jane Tanner sighting, which I believe was concocted with a view to diverting attention away from the truth about what actually took place...
The Met. need to take a very close look at Jane Tanner, and her partner, and what they got up to that evening? Their movements between the tapas bar and the apartment block where Maddie was tucked up in bed, needs to be scrutinized very closely...
And the movements of Russell O'Brien, in particular...