Oliver Steadman, 28, also charged with communication offences, say Scotland Yard and Crown Prosecution Service

The former Labour councillor Oliver Steadman has been charged in relation to the Westminster “honeytrap” scandal in which a Tory MP was coerced into sharing the numbers of other British MPs.

Steadman, 28, has been charged with one count of blackmail and a communications offence of improper use of a public communications network in relation to one victim, the Crown Prosecution Service said.

Steadman, who was involved in Labour’s general election campaign, also faces four counts of improper use of a public electronic communications network in relation to four other victims, for sending alleged unsolicited indecent images.

The scandal rocked Westminster last year after William Wragg admitted to giving the personal phone numbers of fellow MPs to a man on the Grindr dating app. Wragg subsequently resigned the Tory whip, and did not contest his seat at the general election.