[andy153]

"I don't see the rational behind this one."

Hi again, I don't either - It does not seem to have filtered down to Churches - all Church of England clergy are de facto registrars - so after the Church Service - in my church the couple go to the vestry to sign the registers after which the photographer takes over and does the usual/unusual shots but during the signing, the best man or witnesses often take pictures and as far as I'm aware we have no instructions to stop them.