[London Lite]

Yes - changes were made a lot sooner than originally anticipated. I know for the ex-Celador stations, there was an interim period (a couple of months?) in which the stations were effectively GHR, but with their old name and a separate breakfast show, which wasn't part of the original plan.

The only 'catch' was that the new stations weren't yet able to properly network with GHR at the time, so the presenters had to voicetrack separate shows, which were played out while those same presenters were broadcasting live on the other GHR stations...

From what I recall, UKRD and Lincs kept their presenters until the full relaunch with the GHR playlist due to those groups having their presenters on contracts. Celador and Wireless presenters were freelance, which led to the GHR panic schedule with the existing presenters voicetracking on those stations outside breakfast.

Even after the relaunch fully across those stations, there were ex UKRD sites being used to route the local news and ads as Openreach/BT didn't get the lines ready from the regional hubs to send the feeds directly to the transmitters. That's how panicked Bauer were.