Look for a cab.

The air outside is cold, and it hits you like a sledge hammer after the warmth of the pub. Fortunately, the de-icing properties of the beverages you were just drinking do their job, and you are able to proceed without any risk of contracting hypothermia.

As luck would have it, a taxi has stopped across the road while the driver cleans a large splodge of pigeon faeces off his windscreen. You reach him just as he's finished.

You can:

Request that he convey you back to your hotel post haste and not spare the horses, ha ha.

Change your mind and walk back to the hotel. The invigoratingly biting wind will be good for you.

Return to the pub and stay all evening where it's warm.