Sterling Eccles Topaz 2006 wheel centre cap

Hi, I was hoping someone might be able to point me in the right direction as to where I could buy another alloy wheel centre cap for my Sterling with 14 inch alloy wheels.

I have bought some universal 50mm from amazon which seem to be the right width but not got the right depth for the lugs.

Found the badge and a swift 50mm cap on eBay but not sure that cap will still be the right one.

So if anyone has some advice on where to get a replacement please.

I suppose the last resort is to email some breakers.

Thanks