The Mersey Forest people are promoting some local guided woodland walks in May. It's part of Walk in the Woods month.
Theres a website here where you can find details. Some of the walks are very local - there's one along the Speke Garston coastal reserve for example and another in Woolton Woods.
Obviously I'll be doing my own walking which mainly involves gates, paths and letterboxes, but some of these sound great. Do have a look.