The four will be running the London Marathon on 24 April to raise money for national Children's charity WellChild.
The team are aiming to raise a total of £15,000 which will pay for 750 hours of nursing care for seriously sick children.
Held at the Banking Hall in the heart of the city of London, the event was accompanied by a Las Vegas-style cocktail reception, Rat Pack performers, poker and blackjack tables, and was supported by familiar faces including Shawbrook Bank, Brightstar, and MT Finance.
James Lucas, Director at Barcadia Media, said:
"The night brought together the best and brightest in our industry and I would like to thank everyone who attended for digging deep to support such an important cause.
"We are all fathers ourselves and, while we hope we will never need to use WellChild's services, it is incredibly important that families across the UK have access to crucial support when they need it most. None of us are natural athletes - so we are all somewhat out of our comfort zones - but it will be worth it, and we appreciate your continued support."
Paul Richardson, trustee of WellChild, said:
"The High Rollers event was a fun filled, glamorous evening when the mortgage industry came together in support of four of their own to raise money for WellChild. Thanks to WellChild Ambassador James Prosser and his fellow runners for all the hard work they have put in to both training for the Marathon and for putting on such a spectacular event for WellChild."
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