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.
Cocaine intoxication and blood pressure are variable based on several studies and case reports. Lidocaine and intravenous lipid emulsion have been successfully used for serious ventricular tachyarrhythmias in several case reports. The use of beta-blockers for cocaine cardiovascular toxicity has been subject to a relative contraindication by many clinicians for several years despite extremely limited evidence. The phenomenon of “unopposed alpha-stimulation,” in which blood pressure increases or coronary artery vasoconstriction worsens after blockade of beta-2 vasodilation in cocaine-abusing patients, is controversial. This rarely-encountered and unpredictable adverse effect has resulted in some clinicians advocating for an absolute contraindication of the use of all