You just need to fill in your details on the RSGB NoV page and you will be instantly emailed a link to the PDF of your NoV certificate. The NoV’s currently being issued have an expiry date of October 31, 2015.
Apply now for your NoV at http://rsgb.org/main/operating/licensing-novs-visitors/online-nov-application/146mhz-147mhz-nov/
The application asks you for your Licence Number which appears on page 1 of your licence. If you don’t have it simply login to the Ofcom licencing page and download a new licence PDF at https://services.ofcom.org.uk/
UK radio hams start 146 MHz development
New UK Amateur Radio 146 MHz allocation