Mil Air ADS-B logs.

[m0lsx]

I have just found the following site.

http://www.secret-bases.co.uk/military-aircraft-logs-2017-april.htm

A list of military aircraft captured on the hugely popular virtual radar screen system known as SBS BaseStation, by Kinetic Avionics. It receives Mode-S / ADS-B transponder signals on 1090 MHz.

As well as UK transponders on RAF, Royal Navy and Army Air Corps aircraft, you will also find US, Canada, NATO, French and German military and quite a few other European countries too, plus Australia and New Zealand. You can even find those infamous MI5 Islanders from RAF Northolt and a few U-2 spy planes.

[milly]

http://www.adsbexchange.com and http://www.360radar.co.uk both allow you to filter the VRS output in various ways including selecting military traffic only for live tracking.
The former tends to be less accurate but may show more traffic in certain areas. It's global, not very fussy about feed accuracy and advert supported
The latter is UK based and more accurate but this is sometimes at the cost of quantity. If you feed data it's free (but you will be expected to set up the feed accurately) if you don't then I think there are delays in what you can see. Feeding is simple and relatively cheaply achieved.

There is also http://www.live-military-mode-s.eu/ - it's dedicated to military stuff and seems to have good historical logging. No idea what it's like in terms of live tracking.

All three of the above are far more use to anoraks as they take a larger coverage area and allow live tracking. Logs from a 40 mile radius of Stockport are perhaps of interst toi people in Stockport.