The exterior cleaning experts for buildings, Thomann-Hanry, held their annual garden party at Mayfair’s exclusive 4 Hamilton Place this year. On a terrace overlooking Hyde Park, 250 people from the property, architect, hotel and conservation industry enjoyed themselves in an afternoon of networking and champagne, with live music making it all go with a swing and a delicious barbecue to savour in the sunshine.

Thomann-Hanry’s Managing Director, Mark Styles (2^nd from right in the photograph), said: "Having cleaned No4 Hamilton Place last year it was a fabulous opportunity to use the venue to entertain our clients and industry personnel. Not only did the venue offer stunning views of Hyde Park but recent examples of our impressive cleaning work on the exterior of The Intercontinental, the Four Seasons, The Dorchester and No4 Hamilton Place itself. We hope our guests enjoyed themselves and we look forward to welcoming them back next year.”

A charity auction, which boasted tickets to a Rugby International at Twickenham and a day’s pilot training as prizes, raised a generous £1,500 for Thomann-Hanry’s chosen charity, Great Ormond Street Children’s Hospital.

The music was provided by Sistacated, while a magician wowed guests with his impressive card tricks and memory stunts.

The event took place during Wimbledon fortnight and tennis fans were able to follow the tournament live, thanks to a screen in the Argyll room.

Thomann-Hanry provides scaffold-free gentle abrasive cleaning and restoration of exteriors of buildings, specialising in stone. Originated in France, the environmentally friendly, patented cleaning formula has been in operation in the UK since 2006 and continues to grow year-on-year, boasting a number of high profile clients – such as those mentioned above and including The Ritz.