Overcrowded refugee camps in Greece were coming under renewed pressure last night after a spike in new arrivals across the Aegean Sea, aid agencies have warned.

The rate of new arrivals to the camps on the Greek islands has doubled this month following last month’s failed coup in Turkey which impacted security in the region.

The new wave arrivals continued on Friday when Greece’s coastguard rescued dozens of migrants after their boat ran aground off the southwestern tip of the Peloponnese.

The up-tick in new refugees brings to 58,000 the total of migrants marooned in Greece since the closure of the so-called “Western Balkan route” last February which effectively sealed Greece’s northern border with Europe to migrants.

Government figures showed 261 migrants or refugees arrived on Greek islands in the 24 hours from Thursday morning to Friday morning - a jump compared to recent figures, which had ranged from a few dozen to about 150 per day.