
The win is the first for the newly-merged DLKW and Lowe agency and follows a pitch against the incumbent, M&C Saatchi, Beattie McGuinness Bungay and VCCP.
Its appointment, following a pitch handled by The Observatory, comes as Halfords looks to rebrand its 224 existing outlets and plans to open a further 200 branches.
Halfords acquired Nationwide Autocentres earlier this year and plans to create 1,000 new jobs as part of the expansion.
It follows speculation earlier this year that Halfords was also planning to acquire arts and craft specialist HobbyCraft in a bid to complement its existing retail business.