April (production)


 * 1976 - Location filming for The Masque of Mandragora took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1977 - Bray filming for The Invisible Enemy took place. (REF: Doctor Who The Handbook: The Fourth Doctor)
 * 1995 - Jon Pertwee filmed his regeneration scene as a cameo for the fan film Devious. It was his last performance as the Third Doctor.
 * 2005 - At some point before the 28th, Tom MacRae was invited to write a Cyberman two-parter for Doctor Who series 2. (DWMSE 14)