Practice Alternative - Help Please

I had been in practice in the Merseyside area with a partner. My partner has moved back to consultancy work and I now find that in order to retain my practising certificate (CIMA), I need to name an alternative shoud anything untoward happen to me. I have approached some of the Accountants in the area, but it would appear that few firms are prepared to take on the role. Does anybody else have the same problem / or a solution?
paul tabron