LNER Thompson Class B1 61306 is a preserved British steam locomotive. In preservation, it has carried the LNER-derived number 1306 and the name Mayflower, complete with LNER Apple Green Livery, though this guise is entirely fictional.
61306 was built in 1948 by the North British Locomotive Company, Works No. 26207. Though built to an LNER design, it was delivered after nationalisation to British Railways (BR).
61306 was initially allocated to Hull Botanic Gardens Depot (shed code 53B). In June 1959 it was transferred to nearby Hull Dairycoates Depot (53A). Its final allocation in June 1967 was to Bradford Low Moor Depot (56F), but it was quickly withdrawn in September 1967.
61306 was privately purchased for preservation at Steamtown Carnforth, one of just two preserved Thompson B1s, the other being LNER-built No. (6)1264.
At Steamtown it was painted into LNER Apple Green Livery, given the number 1306 and the name Mayflower. 1306 would have been its allocated running number had the LNER not been nationalised (most ex-LNER BR numbers being the LNER 1946 numbers with the addition of 60000), while the name Mayflower came from a scrapped BR-built Thompson B1, numbered 61379.
In 1978, it moved to the Great Central Railway in Leicestershire, where it remained until 1989, when it was taken out of service for a ten-year overhaul. Scheduled to return to Hull Dairycoates, the sale of the site meant that it moved to the Nene Valley Railway.
Sold privately in 2006 to the Bowden family, it moved to their company, Boden Rail Engineering Ltd, in Washwood Heath, Birmingham. In 2013, she returned to steam wearing her original BR Apple Green livery and 61306, operated by West Coast Railways from their base at the former Steamtown Carnforth.