CONSTRUCTION work has started on an £11 million spa at a top hotel.

South Lodge is a luxury country house in Horsham owned by Exclusive Hotels and Venues.

The new addition will be a three and four-storey spa which is due to open in late 2018.

There will be 14 individual rooms and a double treatment room, pre and post-treatment relaxation lounge, a gym, thermal suite with relaxation zone and swimming pools.

Gareth Phillips, contracts manager for Beard construction company, said: “There will be a sloped and curved living grass and wildlife roof which will help insulate the building, absorb rainwater and provide a wildlife habitat.

“The spa will be powered by renewable green energy from biomass boilers.”