I wonder if the reason they still haven't started sharing their data is because it'll be way easier for them to be caught out not running services.
The chances of people noticing that they aren't actually running the services are fairly slim (since if a significant number of people wanted to use them, they wouldn't be supported by Nexus), so really at the minute the only real way for bus stalkers, sorry enthusiasts, to stand alongside the route and see if they actually turn up!
RE: Gateshead Central Taxis