Well the WORST would be you lying in a morgue. So whatever else happens because of this incident, the severest it can be considered is as the second worst
Generally, if it's that fast, they will knock on your door for a nice wee chat or ask you kindly to accompany them back to the station. Unfortunately, if it goes to court, magistrates/judges seem to like to come down disproportionately hard on bikers. So speeds that would earn you a lengthy ban on four wheels you could end up serving time for.
I am by no means a slow rider, but I try to use speed appropriately and realise that the road is not the place for warp speed. The odds are against you and the penalties severe. Tone's right, sounds like you might want to consider a track bike. Less likely to get chased by the old bill...
Sounds like whatever happens treat this as a lesson. Riding crazy (and I have done it, I think we all have at some stage) in my experience only ends up one way.
The problem with saying you were not riding the bike is that you have admitted as much on this forum. Therefore, if it went to court and you pleaded that it was someone else riding or you didn't know who and somehow they managed to prove it was you typing on here you could get done for the original offence plus attempting to pervert the course of justice. Risky. Plus if they discovered any other way you were telling porkies (someone grassed on you, CCTV of you in a local garage with your helmet off getting on your bike, etc. etc.) they you would be in deep poop.
I am not advocating removing one's plate or committing any such offence in any way shape or form, but it always seems the height of stupidity, if you insist on breaking the law to such a degree as to be going warp speed everywhere, to leave your plate on. I have known people who have had the coppers getting back to their house before they have! That said, in my experience, most people I know who have run have never heard anything back. So you will probably be ok. However, given that it's Monday, and I presume you were out yesterday, I'd have said you have a few more days of sweating it out left. 14 days from now and I'd have said you'd be ok. However, generally, the police take a dim view of people who fail to stop and a dimmer view of those 'tearing the roads with speeds reaching the speed of sound', so I would watch your back if it's your manor you were on. However, hopefully you won't hear anything and can chalk it up to experience and learn from it.
The other thing in your favour is that the car chasing you may not have been equipped with any sort of radar/video equipment. I am not sure how likely that is these days, but even so, I have known people who have been pulled and given just a ticking off for 100+ as 'the radar's not working/not equipped/not switched on' and the person was using the speed appropriately (eg 100+ on a motorway dual carriage way not round a hairpin) but that seems a rarity these days. They may not have you on video though or a record of your speed. So, even if they catch you, it is the copper's word against yours. If the worst happens, just keep your mouth shut/try not to incriminate yourself and get legal advice.