That is a nice authentic looking Ifor Williams aluminum cattle trailer!
I have a larger (1:18) Joskin manure tank by Siku, to go with some 1:18 tractors from Bruder, also a nice match. Although these larger scale vehicles are made of plastic their 1:32 sets are largely metal.
Of course I fight for the money and she fights for the love of the kids. It's only natural that you fight for the thing you lack the most!