Blue Peter stretch of track which, on 3 July 1938, saw the world speed record for steam locomotives of set by LNER A4 Locomotive no. 4468 "Mallard". In October 1998, Richard Bacon was sacked, following reports in "News of the World" that he had taken cocaine. This incident followed shortly after the show's 40th anniversary, when previous presenters returned for a special programme. Those returning included Leila Williams, Valerie Singleton, John Noakes, Peter Purves, Diane Louise Jordan, Anthea Turner, John Leslie, Tim Vincent, Yvette Fielding, Caron Keating, Mark Curry, Janet Ellis, Peter Duncan, Sarah Greene, Tina Heath, Simon Groome and Christopher Wenner.
Which? to own Which? Ltd and retains its own name. Following the deregulation of the gas and electricity industry, "Which?" launched a free online energy comparison service called "Switch with Which?" in 2005, to compare energy tariffs. The service was awarded Energywatch Confidence Code accreditation in 2006. In the 2010 Superbrands index, "Which?" ranked fifth in the "Media — Newspapers and Magazines" category and 256th overall. "Which?" carries out systematic testing of consumer products and financial services, the results of which are published in reports in "Which? magazine" and on the "Which?" website. Tests are carried out on goods, services, and