They aren’t looking for anyone else, and the other guy was released quickly.
i would assume that as much as its to be proven in court they likely have the guy, and are right now compiling all the evidence, from cctv to dna, prior to charging.
and cctv won’t just mean him getting in his car, it will be following his car the full 300 miles and back again. Following his car on ring door bells uo her lane etc.
there will be a lot the police are not saying, from the motive to the murder weapon, to the cctv to the dna, to even if he’s admitting or denying it.
to drive 300 miles to go and bludgeon Anne widdecombe to death is really fucking shocking, I clearly don’t know but I’m going to guess this man is not super smart. It’s no professional hit man or master criminal, the fact they have him so quickly would indicate potentially he left a lot of evidence, he may even have confessed, who knows.
but the police won’t issue details as they won’t want to prejudice the case. The most we will hear is he’s been charged or released, fit for trial or not, remanded in custody or not, what he pleads at pre trial, until the trial itself.