Scott's first professional boxing bout was a draw with Piper Taylor at Edinburgh, Scotland, on 15 March 1919.
His record included:
- Four wins, and then a draw with, and a victory over Petty Officer Prizeman (South Africa).
- Seven wins, three defeats, two no contests, and then a draw with Piet van der Veer (Netherlands) in London on 23 November 1921, two wins, and then a draw with van der Veer at Circus Schouwburg in Rotterdam, Netherlands, on 6 November 1921, three wins, and then a points defeat by van der Veer at Haagsche Zoo, The Hague, Netherlands, on 21 December 1921.
- Four wins, and then a knockout defeat by Albert Kid Lloyd (Australia) in London on 4 November 1922, seven wins, and then a points victory over Lloyd in London on 31 January 1924.
- Three wins, and then a points victory over Bertus Ahaus (Netherlands) in London on 29 March 1924.
- A points victory over Jack Humbeeck (Belgium) at Premierland in Whitechapel, London, on 24 April 1924.
- A points victory over George Cook (Australia) at the Royal Albert Hall in London on 29 May 1924.
- One win, and then a technical knockout victory over Andre Anderson (United States) at Wembley Stadium, London, on 9 August 1924.
- One win, and then a points victory over Tom Heeney (New Zealand) for the vacant British Empire heavyweight title at The Ring in Blackfriars Road, London, on 22 September 1924.
- One defeat, and then a points victory over Soldier Horace Jones (aka John Horace Beaudin) at the National Sporting Club in Covent Garden, London, on 10 November 1924.
- One win, and then a points victory over Paul Samson Koerner (aka Paul Sampson) (Germany) in Berlin, Germany, on 27 February 1925.
- Four wins, and then a knockout defeat by Paulino Uzcudun (Spain) at Plaza de Toros de Bilbao, Spain, on 6 September 1925.
- A disqualification victory over George Cook (Australia) for the vacant British Empire heavyweight title at the Industrial Hall in Edinburgh on 27 January 1926.
- A knockout victory over Frank Goddard for the British heavyweight title at the Royal Albert Hall on 18 March 1926.
- A retirement victory over Noel Hugh McCormick defending the British heavyweight title at the King's Hall in, Belle Vue, Manchester, on 30 April 1926.
- A knockout defeat by Harry Persson (Sweden) for the European Boxing Union (EBU) heavyweight title at Holland Park Rink in London on 14 June 1926.
- A points victory over Tom Heeney (New Zealand) defending the British Empire heavyweight title at The Dell in Southampton on 10 July 1926.
- A knockout victory over Marcel Lunaud (France) at Premierland, Whitechapel, London on 2 December 1926.
- A knockout victory over Leon Sebilo (France) at Premierland on 12 December 1926, then in his second bout of the day, a disqualification victory over Armando De Carolis (Italy).
- A disqualification victory over Riccardo Bertazzolo (Italy) for the European Boxing Union (EBU) heavyweight title at the Royal Albert Hall on 27 January 1927.
- A points victory over Franz Diener (Germany) at Berlin Sportpalast, Germany, on 4 March 1927.
- A disqualification victory over Yale Okun (USA) at Olympia in London, on 21 April 1927.
- A disqualification victory over Helmut Siewert (Germany) at Premierland on 16 June 1927.
- One win, and then a points victory over Pierre Charles (Belgium) at the Royal Albert Hall on 27 June 1927.
Scott then travelled to the United States, where he achieved:
- A knockout defeat by Knute Hansen (Denmark) at Madison Square Garden, New York, on 4 November 1927.
- A knockout victory over Monte Munn at St. Nicholas Rink, New York, on 28 November 1927.
- A points defeat by Johnny Risko (Austria) at the Public Auditorium in Cleveland on 7 December 1927.
- A points victory over Pierre Charles (Belgium) at St. Nicholas Rink in New York on 19 March 1928.
- A points victory over Roberto Roberti (Italy) at Madison Square Garden on 11 May 1928.
Scott then travelled home to England and scored:
- A disqualification victory over Ted Sandwina (USA) at the Royal Albert Hall on 31 January 1929.
- A points victory over Ludwig Haymann (Germany) at the Royal Albert Hall on 2 May 1929.
Scott then travelled back to the United States, and achieved
- A points victory over Victorio Campolo (Italy/Argentina) at Ebbets Field, New York, on 23 September 1929.
- A disqualification victory over Otto von Porat (Norway) at Madison Square Garden on 9 December 1929.
- A technical knockout defeat by Jack Sharkey at Madison Square Garden Stadium, Miami, on 27 February 1930.
Scott then travelled back home to England, and went on to:
- A knockout defeat by Young Stribling (USA) at Wimbledon Stadium, London, on 28 July 1930.
- A knockout defeat by Larry Gains (Canada) defending the British Empire heavyweight title at Welford Road Stadium in Leicester on 13 June 1931, his final professional boxing bout.[4]