Around 500 guests were evacuated from a five-star hotel after a gas explosion in the basement caused part of the building to collapse, injuring 14 people.

The Churchill Hyatt Regency hotel in Portman Square, central London, was evacuated following the explosion at around 11.40pm on Friday night and a number of people were being treated by paramedics.

Around 80 firefighters were on the scene at the height of the incident, including appliances with specialist equipment to deal with collapsed buildings. The full extent of the damage is not known at this stage and all people were accounted for, a spokesman for London Fire Brigade said.

London Ambulance Service said 14 people were injured, including two men with leg wounds who were taken to nearby St Mary's Hospital.

A further three people needed hospital treatment, while nine others were checked over at the scene and given the all-clear.

A spokesman for the hotel told ITV no guests were harmed and could be relocated until the damage was assessed.