A good number of underlings (sample pages shown). A good copy - but dating from 1963 it is not perfect.
Ian Allan British Railways Locomotives Part 4
IAN ALLAN BRITISH RAILWAYS LOCOMOTIVES 1949.80 PAGE BOOK.SIZE 10 x 15cms
Ian Allan British Railways Locomotives Southern Region 1955 Part 2 x 3
Ian Allan British Railways Locomotives & Motive Power Combined Volume 1974
Rare Ian Allan British Railways Locomotives Combined Volume 1962/63 Parts 1 - 7