The <a href="https://en.wikipedia.org/wiki/London_Transport_Museum" class="extiw" title="w:London Transport Museum">London Transport Museum</a>'s preserved <a href="//commons.wikimedia.org/wiki/Routemaster_prototype_RM1" title="Routemaster prototype RM1">Routemaster prototype RM1</a> (reg. SLT 56), pictured during the <a href="//commons.wikimedia.org/wiki/Category:2006_HCVS_London_to_Brighton_run" title="Category:2006 HCVS London to Brighton run">2006 HCVS London to Brighton run</a>. A veteran in its own right, on the day it was acting as a support vehicle to the vintage bus and museum stable-mate, the London General Omnibus Company bus B340 (reg. LA 9928), which it's seen here following (see wider image)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/35765599@N00">Jon's pics</a> (original), cropped by User:Ultra7
CC BY 2.0
Crop of <a href="//commons.wikimedia.org/wiki/File:Routemaster_RM1_(SLT_56)_%26_LGOC_B340_(LA_9928),_2006_HCVS_London_to_Brighton_run.jpg" title="File:Routemaster RM1 (SLT 56) &amp; LGOC B340 (LA 9928), 2006 HCVS London to Brighton run.jpg">File:Routemaster RM1 (SLT 56) &amp; LGOC B340 (LA 9928), 2006 HCVS London to Brighton run.jpg</a>