Leeds students plan a mammoth clean-up operation after 4/20 on Woodhouse Moor

Thousands of people are expected to descend on the park this afternoon to mark April 20, known as 4/20, and in previous years there have been mountains of rubbish left behind.

Rebecca Adkin, 23, is one of a group of Events Management students at Leeds Beckett University who will meet at the park early on Thursday morning.