Diners can claim 25 per cent discount on tables booked after 8.30pm on Sunday-Thursday evenings and after 9pm on Friday nights until Thursday 19th October 2017. Offer is valid Sunday to Friday, excluding Bank Holidays. Offer is for food only and excludes drinks. To redeem the offer either book online 24 hours in advance, quoting the offer ‘Night Owl Offer’. Or ‘Like’ us on Cosmo Derby Facebook and click http://woobox.com/t5x7xp to download your free voucher. Cannot be used in conjunction with any other offer. Management reserves right to cancel or alter this offer at any time without prior notice. Offer is valid at COSMO Derby only.