Med/lrg dog harness (Welwyn Garden City (AL7))

My 13.5 year old Labrador X needs a harness rather than the traditional collar and lead we have always used; her trachea is starting to deteriorate due to her age. I’d love to be able to rehome a harness, rather than buying one new, if anyone has one spare. I can collect weekdays from WGC. Thank you.