G'day Claude

The Villiers controller arm is a lot thinner than the Victa one ,pic below is Villiers but a lot of the Villiers controller
arms are straight the one below is bent on an angle.

https://central-motor-cycles.myshopify.com/products/villiers-vintage-throttle-control-lever

Your fuel tap is generally sold as a Villiers fuel tap ,this one below is slightly different.
https://www.ebay.co.uk/itm/Atco-Villiers-Brass-Petrol-Fuel-Tap-Lawn-Mower-1929-33-/303754389055

Cheers
Max.