Niall McDiarmid is a Scottish photographer, born in 1967 and based in London. He grew up in Aberfeldy, a small village in Perthshire, and moved to England to study engineering before turning to photography. He has worked as a commercial and editorial photographer since around 2006.
In 2011 he picked up a film camera again and began photographing the people of Britain, travelling from town to town by train. That work became the books Crossing Paths (2013), Via Vauxhall (2015) and Town to Town (2018), followed by Southwestern (2019), Shore (2020) and Breakfast (2021), a still life series of his breakfast table at home, which he published himself under Hey Little Heroes. Town to Town and his 2026 book Colour, made mostly in London, were published by RRB Photobooks.
He has had solo exhibitions at Oriel Colwyn, the Museum of London and the Martin Parr Foundation. His prints are held by the Martin Parr Foundation, the Museum of London, the National Portrait Gallery and the Sir Elton John Photographic Collection.