HTS was once aligned with al-Qaeda and is still proscribed as a terror organisation by most Western countries, although the UK and US say they have been in contact with the group.

Asked whether HTS could be removed from the UK's list of proscribed terror groups, the foreign secretary said the rebel group remains a proscribed organisation that came out of al-Qaeda.

Six people have been charged with membership of a proscribed terrorist group, the Met Police say.

In a statement Monday, Hayat Tahrir al Sham announced “a general amnesty for all military personnel conscripted under compulsory service,” adding that “their lives are safe” and proscribing any revenge assaults.

In another post, he retweeted a link to an article on Bari Weiss’ conservative news site, The Free Press, proscribing a “fix” for children using their phones.