Undercover officer denies role in arson attack on Debenhams in 1987

Six witnesses had told inquiry Bob Lambert was involved in attack while masquerading as animal rights campaigner

An undercover police officer has denied that he set fire to a high street department store while masquerading as an animal rights campaigner, a public inquiry has heard.

Six witnesses have told the undercover policing inquiry that Bob Lambert, a police spy, was involved in an arson attack on a Debenhams that caused damage costing 340,000.