How to enter Participants simply need to fill in the form below. Entrants should tell Centra what makes their deli hero special - whether it’s the quickest roll-making, going above and beyond, providing the best customer service, contributing to local initiatives, or simply knowing their order by heart every time. What’s in it for participants? By nominating, participants will be in with a chance to win a Centra voucher - and their deli hero could be in with a chance of winning top prizes.