On Monday, 9th, Mrs Slim received a letter from Zurich informing her that, as she received a 'W' ppsn on our marriage, appended to my number, she MUST now apply for a new ppsn or get her original ppsn reinstated. This was required by 16th September, next week.
On contacting DSP, Mrs S got a very helpful chap who advised that they were inundated by clients of Zurich, which seems to have driven this issue for whatever reason, and the date has now been pushed back to 16th October.