Buckinghamshire-based broker will join at the beginning of November.
Sharp, the last of the AR network's founders remaining in an executive position, will be succeeded by Dawn Derbyshire.
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Managing director Roger Gaunt expects the business to double within two years.
Move follows the launch of Gauntlet Enterprise's southern hub last year.
The newly-appointed consultant was at Aviva for 40 years and held various roles including head of trading for London and the South East while he was at the firm.
The network boss Andy Tedstone reveals his plans for the newly-acquired business which he insisted will retain independence from PIB.
Find out who is in the running to win a trophy at The Brewery on 13 September.
Network saw operating profit rise by 71%.
Bravo Group to agree loan worth £80m earmarked for acquisitions from major bank, as the business reports growing revenues for 2018.
PIB CEO Brendan McManus unveils his plans for Cobra, while Cobra boss Steve Burrows discusses the sale process, competition and feedback from network members.
Once upon a time you could not keep Cobra out of the news. Insurance Age content director Jonathan Swift reflects on how the business regrouped almost by stealth to become the latest important part of the PIB growth story.
Broker Network Partners rebrands as Ethos to separate deals from its networks as CEO Des O’Connor reiterates that the networks will remain apart.
Hopwood on being owned by Marsh, restructuring the networks division and why he wants brokers to remain independent.
Markel-owned business targeting regional brokers.
MD Howard Pepper says the AR network made "substantial investments" in staff and IT during 2017.
Brokerbility’s Ashwin Mistry explores what networks have to offer providers and brokers in a disrupted insurance world.
The broker will work with Shawbrook Bank in order help support its network members with M&A aims.
CEO says network has new deals in the pipeline as revenue rises in 2017.
Speculation over the future of the two networks as brokers respond to HPS’s Compass buy
Deal includes oversight of FAB network.
Former Marsh head of networks takes up MD role for Aon’s affinity business.
With a vibrant independent broker market and strong presence from nationals and insurers, Leeds is going from strength to strength
Duncan Carter leads the new D&P division as Bluefin Network’s David Hopwood is promoted to become head of Marsh Networks.