Out walking Dexter we came across a lovely black Lab bitch at 07:30 this morning. She had a collar on with a tag saying "I've been microchipped".
After a 5 minute wait to see if anyone rocked up, I brought her back home for a drink, then off to the vets to get her scanned. Hurrah, there was a beep!!
Hopefully all the details are up to date, but without the chip I'd have been door knocking for hours.