Stephen Jones has taken over from John Cadwallader as managing director of the Birmingham office of the stockbroker Brewin Dolphin.
Mr Cadwallader remains as regional managing director of Brewin's seven Midlands and central branches ranging from Manchester to Norwich.
"I will continue to be based in Birmingham and will continue to look after my private clients," Mr Cadwallader said. "I am not giving up my investment role."
Mr Jones, aged 43 and a policeman before he became a stockbroker in 1987, said he does not intend to initiate a "huge amount" of change at Brewin.
"The office has been quite successful under John's leadership," he said.
But the departure of six experienced brokers last year to launch a Birmingham branch of Christows came as something of a shock to a centre that had previously been noted for attracting talent from rivals.
"It was a wake-up call for us," Mr Jones said. "By hindsight that served us very well because we got in very good people to replace those who left. We've got more skills and more services."
Brewin's inheritance tax planning service, now run by Stephen Williams, has attracted £20 million in six months, he added.
A one-time winner of The Birmingham Post share-tipping competition, Mr Jones left the Metropolitan Police after meeting and marrying the daughter of Michael Evans - another share-tipping winner - then senior partner of Murray & Co. Mr Jones joined Murray's Cardiff office.
"This was in the mid-1980s at the height of the privatisation boom," he recalls.
"I am a naturally inquisitive person and this new world fascinated me - so much so that we took the brave step to sell up in London and move to Cardiff. I was lucky to have been given the opportunity to do something I love."
Mr Jones describes himself as "a reluctant gardener, a poor golfer and an enthusiastic supporter of Manchester City".