Arrived yesterday, dropped them off last night, and after some mild grinding of the caliper to clean up the chamber, it fitted like a glove
Massive props to @shebabby for pointing me in the right direction on ebay.
For anyone else in Internet land who needs needle roller bearings with a hole for honda brake caliper handbrake mechanisms, you need
7E-HKS BA1012 Needle Roller Bearing with Hole 15.875x20.638x19.05mm
I got mine from the seller named cardiff-deals
https://www.ebay.co.uk/itm/202541737100