Rogerson is set to become non-executive vice-chairman of hatch-group, founded by CEO Michael Murphy, to boost the group's reputation in the financial PR market.
He comes out of retirement four years after selling the Dewe Rogerson Group, which he co-founded with Roddy Dewe, to marketing services group Incepta.
Dewe Rogerson merged with Incepta's Citigate Communications brand following the £27m takeover.
Since selling the group to Incepta, Rogerson has been involved in Concept to Profit - a venture providing help and guidance to pre-seed enterprises.
At hatch-group, it is expected Rogerson will add some clout to the agency's financial PR and IR offering, Prospero Financial, launched officially this month.
Prospero is headed by Michael Oke, a founding partner of Smithfield Financial, who joined hatch in February (PRWeek, 1 February).
Murphy said: 'Nico is non-executive vice-chairman, but one of his roles will be to help build our financial and IR business.
'His background in building Dewe Rogerson will be invaluable as hatch continues its aim to grow into a top ten UK and top 15 pan-European PR agency by 2004,' he added.
In the role of vice-chairman, Rogerson will support non-executive chairman John Lewis, who takes up his post at the same time.
Lewis holds a number of non-executive directorships across the property world, services and heritage industries.
He also has 30 years experience as a lawyer, most recently with top ten firm Eversheds.
hatch-group launched in June 2001, with the £5m acquisition of media and tech agency MacLaurin.