An ISIS fighter from High Wycombe has complained about Syrian and Arab culture in a recent blog post, grumbling that he has constantly has his shoes stolen.

Omar Hussain, a former Cressex School pupil and security guard at Morrisons who fled to Syria, became infamous for a Newsnight feature where he claimed he would “only return to the UK to plant a bomb”.

A blog post believed to be written by Hussain, entitled “Culture Clash: Understanding The Syrian Race” was published under a pseudonym Abu Saeed al Britani.

It criticises his Syrian hosts on a number of subjects including personal space, table manners and even footwear.

He said: “Syrian brothers have a very peculiar philosophy whereby they believe that everyone can share each other’s footwear, irrespective of foot size.”

“A Syrian will eat all your food without permission, making you go hungry for the rest of the day without apologising nor even informing you of what he’s done.

“Unfortunately Syrians seem to be very childish in their dealings and mannerisms in how they interact with each other.

“There is a time for being serious and a time for being childish and joking around. However the line between the two is somewhat hard for our Syrian brothers to judge.”

He also criticises Arabs in general on a number of topics including animal cruelty.

“It is not uncommon to see an Arab throw objects at animals and to chase a hungry cat away,” he writes.

“Nor is it uncommon to see some from among them killing harmless dogs.”

Omar Hussain is one of at least 700 Britons thought to have travelled to Syria and Iraq to join militant groups.