TBF - he was generally odd. The other thing is he was an attention seeker - the whole alibi thing could easily be him trying to make himself out to be more important and relevant than he was. And yes, I know it seems strange with a murder but a). he had a history of drawing attention to himself and b). this kind of behaviour is not unusual, dozens of people try and admit to crimes they haven't done for a bit of attention - knowing that 99% of the time nothing will happen other than a slap on the wrist for wasting police time as they're innocent.
Barry George is a very dangerous man, especially to females.
We will see what the latest court outing brings but previously he's been arrested on the grounds of Buckingham Palace trying to attack Diana, stalked women on streets and now in court for a long standing rape accusation.
Could he have killed Jill Dando? Absolutely but I'm less convinced he was there in the actual circumstances. Could he really have just faded into the background in the minutes after without people walking past him on streets noting he was very close to her house at that time? Or be hanging around on the street corner for hours? Especially with his image in all the media outlets when he was arrested in May 2000?
I think given he seems someone who gets quite agitated in public spaces someone would've spotted him in Gowan Avenue after 11am that morning. In the first Crimewatch appeal there was someone driving past who saw a male standing on the corner of the road at 11.29am so that has to be the killer surely as he was 50 yards from her house.
This is different to say a hitman being deployed and they are never located so there is no real image and so memories fade on what people see on the day over time.
Also he did go somewhere else that day, HAFAD. Just saw a reddit forum and they're convinced on there he was at the centre by 12pm which would've made it near impossible if he'd just gone back home to have a change of clothes.
However I don't think the timings were ever proved conclusively in the July 2001 trial as the clock had stopped or something so timings weren't recorded when he turned up. If it was after 1pm then his alibi is less secure and then he went to a taxi firm and caused a scene unnecessarily.
If his alibi was rock solid that day and it was proved by HAFAD staff he was at the centre at midday I don't think it would pass CPS threshold for a trial in the first place.