Travellers who were evicted from a south west London park have left behind "huge quantities" of construction waste, Wandsworth council say.
Officials have branded the mess "an absolute disgrace" after builders' rubble, wood and other materials were dumped on Tooting Common.
The group arrived in a fleet of 19 cars and caravans on Tuesday but left yesterday after the council told them they would face legal action if they remained.
The clean-up operation is expected to cost thousands of pounds.
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In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.
The terror attack carried out by Khalid Masood at Westminster that left four people dead lasted less than two minutes say police.
Two knives were found at the scene in Islington, North London, and the suspects fled on foot before being arrested.