A notorious jihadi from High Wycombe has urged extremists to plan terrorist attacks in London similar to those that recently devastated Westminster and Russia.

Former Morrisons security guard in Temple End, Omar Hussain, released a disturbing video in an attempt to recruit followers to plan bomb attacks like those that shocked the metro system in St Petersburg this month.

The 30-year-old issued bomb making guidance on the encrypted chat service, Telegram, and posted a picture of a finished device saying “looks like crème brulee”, according to The Mirror.

The IS recruit is believed to have fled to Syria from High Wycombe in 2013 and allegedly launched a campaign to lure new recruits and persuade them to act in the name of Isis.

The former Cressex Community School student first rose to notoriety after appearing via video link on BBC’s Newsnight, where he claimed he would only return to the UK to “plant a bomb”.

He has regularly appeared in Isis propaganda messages before and in September 2015 was officially blocked by the UN from ever returning to the country.