Briggs also created a domestic record by winning the British League Riders Championship for six consecutive years from 1965 to 1970, representing the Swindon Robins.

[6][7][8] Briggs retired from British league racing in 1972 after an accident during Heat 5 of the World Final at Wembley Stadium with Swedish rider Bernt Persson.

Their trips to the US, primarily the Costa Mesa Speedway in Los Angeles, helped spark the American motorcycle speedway scene which had been dormant on the world stage since the pre-World War II days of 1937 World Champion Jack Milne, his brother Cordy Milne and Wilbur Lamoreaux.

From 17 March 2010 Briggs took part in a John o' Groats to Land's End bike ride to raise money for the BBC's Sport Relief.

[12] In retirement, Briggs became the mentor to many young riders who went on to race in World Finals including fellow Kiwi Mitch Shirra.