Former Pret MD Andrew Walker has joined Zambrero as an advisor.
Walker, who was previously led the turnaround of Eat before its sale to Pret, joins the Mexican-inspired burrito business after it received £143m in equity financing from Metric Capital Partners earlier this year.
The Australian-founded franchise currently has around six sites in the UK and some 15 in Ireland, and is looking to add a further 25 by the end of this year.
The brand has 250 sites worldwide in Australia, New Zealand, Britain, Ireland and the United States.
Walker is also a non-executive director at Farmer J, which recently announced its eleventh site will open in Piccadilly.
