不可以把

Border Agency 网站说了：
If you have been naturalised as a British citizen since being given permission to settle in the UK, you should not apply for an NTL stamp - as a naturalised citizen, you have the right of abode in the UK and are no longer subject to immigration control. If you have also kept your other nationality and you want your British status to be confirmed in that passport, you should apply for a certificate of entitlement to right of abode. See Who has the right to live in the UK? for details.

http://www.ukba.homeoffice.gov.uk/while-in-uk/transfer-visa-to-passport/completing-form-NTL-TOC/

那就是说你入籍以后就不能再办PR护照转移了，所以这意思就是说英国官方认为你的PR已经作废了。如果你不申请英国护照，只用他国护照出国的话,Border Agency要求你先申请在他国护照上贴Certificate of Entitlement to Right of Abode, 证明你也是英国公民而且有回英国的权利：
http://www.ukba.homeoffice.gov.uk/britishcitizenship/righttoliveinuk/claimrightofabode/