We're with Norwich Union Breakdown. RAC are now owned by Norwich Union and so will probably offer a similar product.
Got personal cover so we can drive any of the cars abroad. Not cheap, but alot cheaper than getting recovered at your own expense!
While we're talking about driving abroad, check your insurance before you go too. When they sell you a policy they'll tell you all the guff about 'up to 30 days cover in mainland Europe' etc. etc.
However, if you look at the small print, this is for the MINIMUM cover required by the country in which you are driving at the time of needing to make any claim. Normally, (like the UK) this is 3rd party only. If you want your fully comp insurance to be extended to cover you in Europe, you have to ask for it and pay an extra premium. Doesn't usually amount to much, for me it was an extra £22 a year or something like that.
Only became aware of this when I took some exams earlier this year for the Chartered Institute of Insurers. Checked with my insurer and sure enough I had gone to Le Mans in 2003/2004 without fully comp insurance!!!
For such a small premium, I would have thought it was worth them telling us more about this.