Depending on the actual severity of the injuries, this looks like assault occasioning actual bodily harm, prima facie. And it deserves prison and I think that's what he'll get. The CPS know that he can get an adequate sentence for 'abh', even when, in reality, it is repeated abh on one victim. Jailing him will send a message to all other men who think that punishment by use of force is acceptable.
Attempted murder is a non-starter. It involves proving an intent to kill, unlike murder, which is invariably difficult. Curiously, it is much easier to prove murder because that only requires wounding or causing really serious bodily injury with intent to cause such serious harm, as a consequence of which death occurred.