I don't know, but check the terms. Some policies only cover an illness for a year...you are best looking for one that has lifetime cover.
I use M&S. Very good cover for under a tenner a month.
We have them for both dogs and they paid up straight away last year (well within about 6 weeks!) when Pippa hurt her leg and needed specialist x-rays etc. I asked them if that leg was excluded when we re-newed and they said not.
Can't complain so far..........