The agency is in redundancy consultation with five employees and envisages cutting its staff of 104 to a figure of 99.
Tony Langham, chief executive of Lansons, said a slowdown in the financial services sector has resulted in a drop in client spend and the agency has had to respond.
‘We are still profitable, but we are overcapacity for current market conditions,' he said.
He noted that fees grew 10 per cent last year, but that the agency is looking at a 10 per cent decline in revenues over 2009 offsetting last year's growth.
Langham concluded: ‘We wouldn't have considered letting any of the people go in boom times. They are, very sadly, victims of circumstance.'
The agency joins Pelham PR and Tulchan Communications in cutting back staff numbers. Both said they were making cuts in single figures last week.