Remember the free booze awaiting you at your hotel and
go outside
to look for a cab.
Stay here drinking until the bartender
ejects you
at closing time.
Phone
for a taxi and wait here until it arives.
You quickly warm yourself up with your preferred selection from the bar, and soon feel once more able to face the cold London night. Then again, the atmosphere inside is very convivial and there's no guarantee that you'd be able to find a taxi were you to leave just yet.
You can:
Remember the free booze awaiting you at your hotel and
go outside
to look for a cab.
Stay here drinking until the bartender
ejects you
at closing time.
Phone
for a taxi and wait here until it arives.