[1] Tomlinson, whose parents Simon and Claire own the Beaufort Polo Club, was born into a family of polo players in Gloucestershire and was educated at Marlborough and the University of the West of England (UWE), Bristol with a degree in Spanish.
[2] He and his brother played with James Beim and Malcolm Borwick on the England team and won the Cartier International 2008 at Guards Polo Club, 10–9, against Australia.
[3] Tomlinson captained and won the St. Regis International Test Match at Cowdray Park Polo Club against Italy and the Williams De Broe Test Match at Beaufort Polo Club against New Zealand.
[6] On 27 August 2012, Tomlinson was engaged to German-born British dressage rider Laura Bechtolsheimer.
[7] In 2024, he was accused of being involved in a money laundering network, headed by Alessandro Bazzoni and Siri Evjemo-Nysveen, dedicated to the purchase of polo horses with money from corruption in the Venezuelan oil company PDVSA through the companies CGC One Planet and Clareville Grove Capital.