Video footage from a security drone taken by Thames Water of the Walthamstow Wetlands has been released.

Work began at the reservoirs off Blackhorse Road on Wednesday to build an £8 million urban wetland nature reserve.

Created by the Victorians, the 200 hectare site is one of the biggest sources of supply for London’s drinking water, is the largest fishery in the city and a site of international importance for the wildlife.

Thames Water chief executive, Martin Baggs, said, “The Walthamstow reservoirs are vital in helping us to supply drinking water to millions of customers across London, so it’s fantastic that they can also double-up as a haven for wildlife and a place for people to enjoy the great outdoors.

“These improvements will boost the wide range of opportunities currently on offer to anglers and the community in Waltham Forest, all of which will continue as normal, and benefit the health, wellbeing, and quality of life, of those who visit in the future."