London Wildlife Trust, offer loads of opportunities. London itself has a wealth of natural habitats and our urban environment supports a huge array of wild-life, woods, heaths, wetland reserves and so much more.
The LWT and WildLondon also provide many engagement, experiential learning and training opportunities.
More here on Keeping it Wild and training opportunities: https://www.wildlondon.org.uk/keeping-it-wild
The Great North Wood Project: https://www.wildlondon.org.uk/great-north-woodhttps://www.wildlondon.org.uk/great-north-wood