Ok here we go:
1) If you have good grounds to believe its yours without going round, then tell the police and they SHOULD go round and check it for you, and they should do it fast too - burglary is a priority crime. It should be good grounds though I.e. 'it's a Trek the same model and colour' is a bit weak, but 'it's a Gary Fisher, there were only ever 200 sold' is good. Obvious identifying marks would be good too. Use the non emergency number 101 for this.
2) if you decide to check it out first, confirm via frame number it IS yours, and they give you a test ride, then by all means ride away on it. DON'T put yourself in danger though, I wouldn't recommend doing so if they have a facility nearby to chase you (car, bike etc.) If you do do this, pleasd do then call the police straight away to report what you've done - for all you know you could have 'nicked' the bike from an innocent third party who had bought if not knowing it was stolen. You will still be allowed to keep the bike once you have proved its yours, which is easily done by the frame number.
3) If you chose to check if out, confirm it yours and not take it, do call us straight away, and do use 999. It's a crime still in progress (handling), with a danger to property (the bike) that can be prevented, with the offenders on scene.
Lastly, I find it hard to believe officers weren't bothered to view CCTV footage of the offender riding away. I'd suggest making a complaint ic this really was the case. If they viewed it but didn't take it as if was of no evidential value that's different.