First call have a really bad reputation.

One company worth considering if you are prepared to "pay & claim" are AutoAid.
For £38 they will cover all your vehicles for you and your spouse.
http://www.autoaidbreakdown.co.uk/
You have to pay & claim back but they have a good record anecdotally. The cover is platinum which means rescue, at home, recovery and onward travel.

Another option is Carole Nash who include European breakdown in their insurance policies. This is certainly good if you plan to go to Europ but may also be good just for UK use if their premium is good.
I have heard only good things about both their motorcycle insurance and their breakdown cover and that includes from people who have had breakdowns abroad.