I am trying to get part number of the drawer under radio, as I need one as have altered the one in dash. Also it would be nice if you know where I can get one. 

You won't get one new, you need to find an Elegance in a breakers or look on eBay. I have one fitted to mine but my Comfort had an open bin which is much more commonplace, I don't really use mine as it's not a very useful size internally.

The part number you are after is 6Y0858332.

 

You will not be able to get one of these from Skoda themselves anymore. As Sepulchrave says, your best bet is a breakers or eBay, I bought mine from the latter, but had to wait for one to pop up.

Still showing as available new on partslink24, but you'd have to be keen as it's £88 plus VAT.

LLL offer it for slightly less, but probably/maybe add some postage to this:

Skoda Stowage Compartment 6Y085833247H - LLLParts