Herts & Middlesex Wildlife Trust will be running work parties at the Lake from 10am to 3pm on February 1st and 15th, and again on March 8th and 22nd. Note that these work parties are separate from the FoSL ones and different arrangements apply. However all FoSL members are welcome.
Full details of meeting points, what to bring with you, a work plan for the day etc. can be downloaded here