Victoria Clare wrote in
.207:

In the end I got a small Qualcast Easytrak 32 instead (wheels, but not
powered). Found it was much, much easier to push than my horrible old
Flymo - you might want to try a garden machinery shop or something and
see how heavy you find these small unpowered machines, if the
automated systems aren't suitable.

Oops, meant to correct this to make it clear this is an electric mower, but
not selfpropelled.