He joined the practice in 1977, moving to Hong Kong in 1979 to oversee the design and construction of The Hongkong and Shanghai Banking Corporation’s headquarters.

Returning to the UK in 1986, he proceeded to build up a diverse portfolio of experience including the Carré d'Art in Nîmes, the ITN building in London, Cranfield University Library, Hong Kong’s Chek Lap Kok airport, the Al Faisaliah development in Riyadh, London’s Millennium Bridge, 30 St Mary Axe ('The Gherkin’) and City Hall.

The practice has completed a number of award-winning buildings which include the City of London Information Centre, the 55 Baker Street office development, Grosvenor Waterside and 10 Weymouth Street residential schemes, all in central London.

Projects currently under construction include the Thomas Clarkson Community College in Cambridgeshire, a student housing scheme in Hammersmith, a children’s hospital in Kurdistan, a boutique hotel in China and a residential tower in Hong Kong.

Shuttleworth and members of his staff appeared in the final of the UK 2007 edition of The Apprentice, where they advised the two remaining contestants on designing an iconic building for London's South Bank.