- Sat, 04 MayWest Leeds Activity Centre04 May 2019, 13:00West Leeds Activity Centre, Lenhurst Ave, Leeds LS12 2RE, UKWant to know how food waste is transformed in 1 week? Why is shredding so important? What is Humic Acid? Why do we use woodchip and coffee grounds? If you want more insight into what we do and how you can apply it in your garden join us on Saturday 4th May. Ticket price £5.