probably not worth much if you plan on buy and just selling it, but if you build content on it, it will have some weight in the serps in the uk. Also hopefully its a keyword and not just random letters.
Unless you plan on buying them because you have a clear development plan in mind that you are gonna implement, I wouldn't waste my money on any org.uk names. If you really must have a .uk name, I would only buy .co.uk names.