The event marked the opening of the South West Snooker Academy and raised £6,300 for breast cancer charities.
Holt was in superb break building form throughout the match with efforts of 114 and 127 helping him build up a 5-2 lead.
Iconic snooker referee Alan Chamberlain dies
White hit back in fine style with runs of 61, 65 and 110 levelling matters but a superb 129 in the decider clinched the match for Holt and the £2,400 winner's cheque.
Gilbert eases through at English Open, Thepchaiya makes 139 in whitewash
McLeod shocks Liang in English Open qualifying