Park bought a £75,000 share in Heart of Midlothian Football Club in 1982 after a chance meeting with the clubs then chairman Wallace Mercer at the 1982 FIFA World Cup. He increased his stake to be the second largest shareholder and was briefly appointed a director on the board in 1988.[1] Park quit the club in November 1988 after assistant manager Sandy Jardine was sacked and sold his shareholding shortly thereafter.[2]
Park was one of the so-called Three Bears who, along with fellow fans George Taylor and George Letham, purchased a 19.5 per cent stake in Rangers Football Club in January 2015. He became director of the club for the first time on 6 March 2015, during an AGM takeover led by Dave King.[3] Park resigned after just five months on 4 August to concentrate on business commitments and his son, Graeme, replaced him as a director.[4] Park rejoined the board later the same year on 16 November[5] and was elected to the position of deputy chairman on 12 April 2018.[6] He became chairman after the departure of King on 27 March 2020, initially on an interim basis, before taking the position permanently.[7] He stepped down on 4 April 2023 after three years in the role.[8]