Offer only valid when making an online booking in advance. Offer entitles the person celebrating his or her birthday to have one free lunch or dinner up to one week before or after their actual birthday, when accompanied by at least one full paying adult. Offer is valid Monday – Thursday only. To redeem the offer, please present proof of DOB to your server before being seated. Offer is for food only and excludes drinks. Cannot be used in conjunction with any other offer. This offer is subject to availability and COSMO Oxford reserves the right to withdraw or alter this offer at any time without prior notice. Offer valid at COSMO Oxford only.