text: Examples of these lower standards include narrower than usual platforms and undecorated ceilings at Walthamstow Central , Blackhorse Road and Tottenham Hale , adversely affecting lighting levels .
simplified: Examples of these lower standards include narrower than usual platforms and undecorated ceilings at Walthamstow Central , Blackhorse Road and Tottenham Hale . This also affects lighting levels .