The Conservative Party departs its Smith Square offices on Friday after 50 years' residence.

The Tories are moving to new offices on Victoria Street that are open-plan and air-conditioned.

There are computer screens on most desks and ergonomic chairs costing £600 each.

"What a relief to get out of there, there's no air conditioning," was the view of one staffer.

"It's very gloomy inside - the windows haven't been cleaned for ages and the furniture is looking very tatty."