The chilling document outlines how British jihadis can avoid detection by the security services who are working to prevent a Paris-style attack.

Islamic State terrorists have issued a sickening document to wannabe jihadis living in the United Kingdom.

The terror manual, which was penned by ISIS militants in Syria, is 58 pages long.

It encourages those hoping to commit a Paris-style attack in Britain to trim their beards, wear aftershave and even pretend being Christian in a bid to avoid being detected by the security services.

Named the Safety and Security Guidelines for Lone Wolf Mujahideen, it also advises that terror attacks could be plotted in nightclubs where there is loud music.

The document reads: "No doubt that today, at the era of the lone wolves, brothers in the West need to know some important things about safety in order to ensure success in their operations.

"We thought a lot of non-Arabic speaking brothers would find it interesting and may apply it in their blessed operations.

"If you can avoid having a beard, wearing qamis, using miswak and having a booklet of dhikr with you, it's better.

"It is permissible for you to wear a necklace showing a Christian cross.

"As you know, Christians - or even atheist Westerners with Christian background - wear crosses on their necklaces.

"But don't wear a cross necklace if you have a Muslim name on your passport, as that may look strange.

"If you want to use perfume, don't use the oily, non-alcoholic perfume that Muslims use, instead use generic alcoholic perfume as everyone does, and if you are a man, use perfume for men."