A collection Brighton Tips on the Guardian site I’ve Been There lead to a marvellous old map used for directions to Due South.
The map (here in PDF format) must date from the 70s at the latest, because it still shows the old Kemp Town station and Goods Yard (near Queen’s Park, now the gruesome Gala Bingo on Eastern Road). It’s a fascinating old artefact, hand drawn by the look of it, and a very cool choice for giving directions to a contemporary restaurant.