@Campuswest Thanks for your post! I’d like to direct you toward this article which should point you toward some options for recycling your Dyson battery in the UK:
https://www.dyson.co.uk/inside-dyson/sustainability/dyson-weee-recycling
Thank you Adam for your research.
Bit surprised that there is no Dyson Site set up to recycle a V6 battery. The info in the link is of a very general nature. The first name that pops up for my postcode AL8 *** UK, is a branch of John Lewis the staff in the domestic appliance dept appeared to have no knowledge of the battery recycling/disposal when I asked them! I shall take the battery to my Council run domestic waste centre (recently openned). The staff there seemed very switched on when I went there the other day!
Thanks again