Oystercatchers handled the pitch. Karmarama will now carry out brand, digital and CRM work for the chain, which has 32 restaurants around the UK.
Karmarama’s first work will appear this autumn and is likely to run across print, outdoor, radio and digital, as well as CRM.
As part of the pitch, each agency partnered with one of the Italian restaurants, with staff spending time working there and taking cooking lessons with Gennaro Contaldo, who co-founded the chain with Oliver in 2008.
Louise Ludlam, the head of communication and culture at Jamie’s Italian, said: "From the first meeting, Karmarama felt less like an agency, more like a very creative part of the Jamie’s Italian family."
Jamie’s Italian is positioned as an "authentic, affordable Italian restaurant" and a rival to Carluccio’s, founded by chef Antonio Carluccio.