Titan HiTours is offering ?50 discount per person on all World Traveller Plus and Premium Economy upgrades when booked by November 12 and 10% discount per person for all Business, Upper and First Class upgrades when booked by November 12.? itan HiTours is offering ?50 discount per person on all World Traveller Plus and Premium Economy upgrades when booked by November 12 and 10% discount per person for all Business, Upper and First Class upgrades when booked by November 12.? For details call 0800-988 5800.