In comparison to the rest of your stable that looks too small for you Matt. Think you should just pass this onto me as it looks like a perfect fit
In fairness, that has all the possibilities of a top notch build. One glaring difference to any other image i've seen of the genuine Castorama bikes is the gap between seat tube & rear wheel - usually a noticeable gap. Your new purchase has what appears to be a very small gap? Be interesting to see what you decipher as to it's origins once you've got hold of the beast.
Also be very interested to hear about what & where you go for the chrome refinish, couple of projects of my own that need similar surgery as yours.