thank you but I am sure there will be ideas from someone out there please?

im sure theres a plant thatsome people use for there rooves on these bio houses etc that you can plant but doesnt need cutting . as said your only other option is terracing and mulching with a weed supressent . any slope will mean the mulch will migrate to the lowest spot and if you cant mow your not going to be able to do this work . i dont suppose there is anyone who can mow your lawn for a few quid . perhaps you could go back to nature and plant a meadow of wild plants and flwers ? just a few thaughts and hope your ok .