Offer valid for new bookings only from 2nd January 2026 to 31st March 2026. Subject to availability and blackout dates at Copthorne Hotel Slough-Windsor. Training packages apply to minimum 10 delegates. Group rates apply to bookings of 10 rooms or more. If the room count falls below 10 then standard "Best Available Rate" will apply. Offer is applicable for bookings confirmed within 7 days of enquiry. May not be combined with other promotions or negotiated rates. Millennium Hotels and Resorts reserve the right to amend or withdraw the offer at any time.