OPAL explore is a funded scheme that enables, neighbours, schools and anybody interested to help research the area. There are various schemes in different parts of Britain.
People can register on their website with a free account and contribute to scientific investigations. Currently in London the themes are pollinators and car pollution. Surveys going on in each part of Britain and you can help wherever you are.
Schools also do subscribe to participate as a school project. Please do register with the site and see if anything interests you.
There is a suggestion to build a bee hotel, bird feeders or an earthworm frenzy.
http://www.opalexplorenature.org. Seems ideal for us urban dwellers that happen to reside next to a nice park.