The event, organised by Bicester-based builders’ merchants Grant & Stone, took place at Huntswood Golf Club in Slough and raised £4,775.
The 18-hole four-ball golf tournament saw 125 customers, staff, and suppliers take part.
As well as the main tournament, a variety of prizes were awarded during the event and raffle, including an electric golf buggy, an iPhone SE, Apple AirPods, a digital lock set, and golf day vouchers.
The day finished with a barbecue, followed by prize-giving, a raffle, and a charity auction.
Eliot Ryan, business support manager at Grant & Stone and organiser of the event, said: “We are delighted with the success of this year’s golf day and the fantastic amount raised for such an important cause.
“A huge thank you to everyone who took part – from the players to the organisers and those who supported us on the day.
“Without their commitment, we would not have been able to achieve this. Macmillan Cancer Support offers vital care, and we are proud to contribute to their efforts.”
Macmillan Cancer Support helps people living with cancer, offering medical, financial, and emotional assistance.
Grant & Stone said the money it has raised will “help the charity continue to ensure that no one faces cancer alone”.