It's a Flymo.
... But with less flying capability.
The angular styling and first model Quantum suggest mid-late 1980s...
an interpretation of James Bond's Lotus Esprit I guess.
Not an overly handsome machine.
[I love the ornate stand behind it though]
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Jack
p.s. it's quite a good image there.
The boring angular concrete and mower contrasted against
the circular, radiating flywheel cover and ornate stand.