We like class 08/09 shunters or 'Gronks' as they come straight out of the days of steam. In fact their origin can be traced back to LMS in the 1930s based on an English Electric design. Today they come in a wide variety of liveries and with almost 1000 built by BR starting in 1953 and no replacement insight, they should be around for some time to come. They have a 350 hp engine/generator and a tractive effort of 35,000 lbs.
Normally seen from a passing train or resting between duties in a yard, it is a bonus to have one trundle past you whilst on a platform. Here 08669 in 'Wabtec' livery brings its GNER train through Alexandra Palace Station on the 6th September 2003.
Photo from James & Martin's Picture Collection Copyright 'Jampics' m.hawkes7@ntlworld.com