Recently, I decided to treat myself.
When the Hornby W4 Peckett came out, like some of us, I went a little mad and ended up buying four examples, over a period of time. Not all at once, you understand, that really would be silly.
I thought that at least one could be converted to P4, seeings as I model in both OO and P4. One I would fit scale couplings to, weather and allocate to one of the outrageously improbable OO light railways that I'm rather fond of modelling.