I don't think there has ever been a CBF 1000 meet anywhere, feel free to call one but don't expect too many to want to be riding up to the smoke.
I haven't been to the Ace since way before the ULEZ expansion. We would meet there for breakfast and ride out to somewhere interesting for a late lunch, usually a coastal destination and maybe dip our toes in the sea while we were there. The shout out was always to arrive with a full tank so we'd fill up at the Abbey Road Esso garage which I now see is just inside TfL's ULEZ expansion which means that motorcycles registered before 1st July 2007 will be charged the £12.50 daily charge for entering TfL's ULEZ expansion unless, of course, they've been registered on TfL's vehicle compliance database as an early adopter of the Euro 3 standard.
Details of how to get your pre 1st July 2007 registered CBF 1000 onto to TfL's 's vehicle compliance database
here some of the links are out of date but you'll get the idea.