DVD B&R 87: Great Central RememberedDVD B&R 87: Great Central Remembered 19. 75 Jim Clemens Collection No. 8. The Great Central London Extension was the last main line in England and closed as a through route from Aylesbury to Nottingham in 1966. Jim Clemens visited the line many times in the early 1960s and this video has comprehensive coverage of the route. The video takes the form of a complete return journey from Marylebone to Nottingham Victoria through most locations along the