I don't have breakdown now, because I don't really travel anywhere, not even to work anymore. The garage I use is 30 seconds away so no real need.
I had Greenflag for years though and found them very good. I bought a cheap online deal a couple of years ago and had to call them out twice within a week for totally different problems. They tried to bill me 150 for the 2nd call out, despite my having proof I'd had the work on the first call out done by my garage. Eventually, by complaining repeatedly and providing more and more evidence, I was refunded. But I'd never buy a cheap deal again.
To be honest, the breakdown service I've used don't cost as much as the annual premiums I paid for breakdown. AND they come quickly, because they're getting paid directly for it.