Sir Loyd Daniel Gilman Grossman (born 16 September 1950) is an American-British author, broadcaster, musician, businessman and cultural campaigner who has mainly worked in the United Kingdom.

Grossman later returned to university at Magdalene College, Cambridge, where he studied history of art, receiving in this subject an MPhil degree in 2009 and a PhD in 2014.

Grossman's television career began in 1983 as one of the regular faces on TV-am presenting among other things a short segment, Through the Keyhole, which he devised along with Kevin Sim and David Frost.

Grossman has a continuing career as a guitarist initially with punk band Jet Bronx And The Forbidden, who reached number 47 in the UK singles chart in December 1977 with "Ain't Doin' Nothing".

Grossman also appears as a guest artist with Ian Anderson and Jethro Tull when they play their annual concerts in aid of English cathedrals.

[6] In 2000, he was asked to head a project to improve the quality of food served in British NHS hospitals.

Although some newspapers reported that the project had a £40 million budget, Grossman pointed out in a Nursing Times interview that almost all of that money was earmarked for the ward housekeeping programme.

Grossman's lifelong interest in history, the arts and heritage has involved him in a number of organisations.

His Anglo-American accent reflects his Boston origins and has frequently been the subject of parody including in adverts for his own sauces.

[12] Grossman was appointed an Officer of the Order of the British Empire (OBE) in the 2003 Birthday Honours for services to patient care and promoted to Commander of the same Order (CBE) in the 2015 Birthday Honours for services to heritage.