[JohnDisney]

I replaced mine a while ago and used

https://marine-electricals.co.uk/product/wema-225mm-fuel-and-water-sender-wes3-e225/?

it replaced the swinging arm type sender as originally fitted with a vertical float sensor and it works perfectly and is from a uk based supplier. You just need to match the length to the dimensions of your fuel tank and the length of the sweep (up and down movement) on the float arm.