The gift and card store had tendered its City contract after eight years with WS Financial, but chose to stick with the incumbent and add a consumer element to the account.
‘We've put a lot of emphasis on cross-selling, which was part of the reasoning behind our name change from WS Square Mile this year,' said WS Financial MD Ian Bailey.
He added: ‘We were able to get Clinton Cards thinking about exploring the consumer side as well.'
WS consumer director Nick Woods said his team's exact work had not yet been decided, though it would involve large projects around events such as Easter, Father's Day and Christmas.
Woods heads the consumer side of the account, with WS Financial chair Susan Ellis leading the City team.
‘I pitched for the business back in 1999,' said Ellis. ‘They had a dilemma over how they could communicate to shareholders and consumers, so we took the consumer team along to the review.'
WS Financial is understood to have lined up in the review against agencies including Brunswick and College Hill and advised Clinton Cards during its acquisition of the Birthdays retail chain in 2004.
The group now runs 732 Clinton Cards stores and 368 Birthdays shops across the UK.