Offer is available Monday to Friday for lunch only, excluding month of December. Offer is not valid on Bank Holidays, all School Half Terms, Summer Holidays and Valentine’s Day. Offer entitles the individual to 15% off their food bill plus a free coffee or tea. Alternatively, when dining with friends and family between Monday and Friday lunch time, you can choose 10% discount off the total food bill for a maximum of 6 people and enjoy your free coffee or tea. To redeem the offer, please present your ID confirming your entitlement. E.g. Driving license, Travel Pass etc. to your server when being seated. For over 60’s only. This offer cannot be used in conjunction with any other offer, except for collecting reward stamps with our COSMO Loyalty Card in the usual way. This offer is subject to availability and COSMO Derby reserves the right to withdraw or alter this offer at any time without prior notice. The Restaurant Manager’s decision is final. Offer is valid at COSMO Derby only.