As in Orion Mk2 (same shape as MK4 Escort)? If so non of that shape had rear discs fitted fitted.
Mk3 Orion (same shape as Mk5 Escort) had rear discs when the car was fitted with the 1.8 130ps Zetec engine. They had a separate handbrake shoes that worked inside a drum that is part of the rear disc (like some Vauxhalls and Subarus do!).....