20% off the entire menu when presenting a UNiDAYS QR code at the front counter. This offer is not available via the kiosk, C&C or BK delivery. No minimum spend required. Not valid in conjunction with any other offer. One voucher per transaction. Valid only in the UK. Subject to availability. Voucher valid at participating BK restaurants only. Not valid at Burger King motorway service locations, airports, franchisee locations, train stations and holiday parks. Excludes Northern Ireland. The offer has no cash value. Burger King reserves the right to withdraw or vary this offer any time without notice.