Look, it's fairly easy to research police auction locations, here's how you do it.

Grab a cup of coffee, sit down at your PC, be prepared for a few hours worth of research and you'll find all the information you need. Go to Google, makesure you're on the UK version of the site as you'll otherwise end up with worthless US related results, then search on (remember to include the speech marks as it reduces the number of results) :

'police auction locations'
'locations of police auctions'
'police auctioneers'

and any other police auction associated term that you can think of.

If you're short of time, there's a police auction locations ebook that I think retails at around £3.00. If you've got £3.00 or so, and haven't got a few hours to spend, then it's probably worth it. Other than that it's then just a case of contacting the auctioneers once you've found them and get them to tell you the dates of their next police auction.

If you have a couple of quid per week, there's even a company that offers this service and a whole lot more via a police auction alert system. They're UK based, they've been in the police auction location alert business for a good few years and they'll take all the strain for you. Once you're a member you'll receive police auction location alerts and you can then decide which police auctions to attend. It's that simple. If you fancy checking them out then here's their link - police auction alert system.