Coli / Arthuy is refering to metal brake pipes I think, in which caase make up to suit is definitely the answer. If you don't want to buy a kit to do this (very widely available) then as Colin says, Ian at Rover-Classics has the kit to make one up for you.
If you meant the flexible hoses then i'm pretty sure these are standard across right hand drive, left hand drive and single / dual circuit models. Again, Ian is a good contact and will have in stock. The dual circuit function is obtained by working different calipers off different circuits rather than the modern approach.
Chris