Editing LSWR N15 class (section)

===British Railways===
British Railways gave the class the power classification of 5P after nationalisation in 1948.<ref name=Swift-65>Swift (2006), p. 65</ref> For the first 18&nbsp;months the locomotives sported a transitional livery: Southern Railway malachite green with "BRITISH RAILWAYS" on the tender in sunshine yellow lettering.<ref name=Bradley6>Bradley (1987), p. 6</ref> As each member of the class became due for a heavy general overhaul, they were repainted in the new standard British Railways express passenger livery of [[Brunswick green]] with orange and black lining from April 1949.<ref name=Bradley6 /> Initially, the British Railways "Cycling Lion" crest was located on the tender, replaced from the 1957 by the later "Ferret and Dartboard" crest.<ref name=Swift-65 />

Numbering was initially a continuation of the Southern Railway system, though an 'S' prefix was added to denote a pre-nationalisation locomotive, so that No.&nbsp;448 would become No.&nbsp;s448.<ref name=Bradley6 /> As each locomotive became due for overhaul and received its new livery, the numbering was changed to the British Railways standard numbering system, in the series 30448–30457 for the first ten and 30736–30806 for the rest.<ref name=ABC>Ian Allan ABC (1958–59), section "N15"</ref>