A total of 30 Labour MPs are calling on the government to demand "no bombing zones" to be established in Syria, in the spirit of their murdered colleague Jo Cox.

The MPs have told the Telegraph they would support the creation of safe zones around hospitals and using Navy frigates and RAF aircraft to launch retaliation strikes if these are breached.

It follows an investigation by the United Nations into possible war crimes after at least four people were killed in an apparent chlorine gas attack in the Syrian city of Aleppo.