Sean Fletcher is walking from Tottenham to the Thames on BBC1 next Monday.
He will explore the industrial past and look to its future.
River Lea will be shown as part of the River Walks series in the BBC1 London region at 7.30pm on Monday 10 December.
Each region is having its own programme so at the same time Olly Smith will be seen walking along Hampshire’s River Itchen on BBC South and JB Gill will be following the River Stour through Canterbury on BBC South East.
