Millennium Hotel London Knightsbridge

17 Sloane Street, London SW1X 9NU, UK

Phone: 0207 235 4377


C5 is pleased to offer our delegates a limited number of hotel rooms at a negotiated rate. To take advantage of these rates, please contact the hotel directly and quote the booking code: C5ON171121.

Please note that the guest room block cut-off date is October 18, 2021. After that date OR when the room block fills, guestroom availability and rate can no longer be guaranteed.

Call Reservations on 0207 235 4377 or send an email to