Iraqi forces battle to retake the last enclaves held by Islamic State militants
Other Britons to die in the fight against the militants include sniper Jac Holmes, 24, from Bournemouth, who was killed clearing land mines from Raqqa last month.
Mehmet Aksoy, 32, who grew up in England, is believed to have joined the YPG to work as a press officer and was killed in September during a Daesh attack while he was on duty in Raqqa, according to the Kurdish military force.
Former chef Ryan Lock, 20, from Chichester, West Sussex, shot himself to avoid falling captive to IS last December.
Dean Evans, 22, a dairy farmer from Reading, Berkshire, died in the city of Manbij in July last year, and former Royal Marine Konstandinos Erik Scurfield, 25, from Barnsley, South Yorkshire, died in the northern village of Tel Khuzela in March 2015.