Originally Posted by
ft101
While doing the renewal (on line) one of the questions is regarding holding dual nationality. Having answered yes, when it prints out what needs sent (signed form, photos etc) it asks for the overseas passport too. I reckon not sending it will result in more delay.
Like you, I don't see why they need it.
If in doubt get in touch with them and explain. However I would have thought admitting to holding dual nationality doesn't necessarily mean you hold a passport from the other country.