Overseas first adult passport application

I am applying for my first UK Adult passport from New Zealand. For supporting documents, it requires me to send the following: 1. Naturalization or registration certificate - confirmed 2. full colour copy (every page including blank pages) of any current or expired passports from other countries that haven't been cancelled - confirmed 3. the passport used to enter the country from which you are applying (if this applies) For number 3. because I will be applying from New Zealand, do I actually need to send in my New Zealand passport since I didn't use the passport to enter the country as I was born here? Does that question only apply if you were applying from different country than you were born in. I am hoping to keep my New Zealand Passport as I will be travelling while waiting for my UK passport.