you can easily get 3-5% on a current account if you shop around a bit, and are willing to put up with switching once a year (a bit much for me, but some folk will go to the effort for the sake of a couple hundred quid).

when I say insurance, I mean, for instance, when I had a halifax current account, they threw in AA coverage, and mobile phone insurance as part of having a current account with them. I'm not aware of any challenger bank that has extras like that.