The agency won the account following a two-way pitch again Wieden & Kennedy Amsterdam. Ogilvy & Mather was the incumbent on the account, but did not repitch.
The chocolate brand, which is now owned by Mondelez, a new snacks business separated from Kraft Foods last month, began approaching agencies directly in September.
Most-recent major TV work for Toblerone, created by Ogilvy & Mather in March 2011, showed a woman devising new and interesting ways to eat a bar by breaking up its triangular segments.
The campaign included a website that asked: "What makes your Toblerone, Toblerone?" People could then upload videos and participate in monthly challenges.
It is the second win for Mcgarrybowen since it changed its name from Dentsu London earlier this year. In July, the agency picked up the £25 million Honda pan-European account.
Creative Design Manager £35k-£40k per annum + benefits McKay Williamson, London (West), London (Greater)
Head of Design £Competitive (depending on expereince) Bray Leino, Filleigh, Barnstaple
CGI Artist - Maya Based Generalist - Creative agency London £30000 - £45000 per day Network Career Consultants, London
UX / UI Designer - Financial Services - London £40000 - £49000 per annum Network Career Consultants, London
Digital / Visual Designer - London £38000 - £47000 per annum Network Career Consultants, London
HEAD OF UX & DESIGN - £75-85K + Bonus and Benefits £75000 - £85000 per annum + Bonus and Benefits Salt, Kent