The families of two British women targeted in an acid attack in Zanzibar spoke of their frustration that the attackers have not been brought to justice.

Londoners Kirstie Trup and Katie Gee, both 18, are recovering after being targeted by two men on a moped during a volunteering holiday on August 7.

Their families called on the UK government to apply more pressure on the Tanzanian authorities.

Doug Morris, the partner of Ms Gee's mother, said: "If the Foreign and Commonwealth Office are as committed to helping to bring these people to justice on behalf of two British citizens, then you would expect them to move hell and high water to do that. There doesn't seem to be any sense of urgency."

There is still confusion over how to get a photograph of a suspect to the women for identification, according to Ms Trup's father Marc.

He said: "The photograph cannot be sent in a format that is acceptable by Interpol, or the British authorities."