Hi All,
According to this site
http://www.heavens-above.com/
The Hubble travelled through the nw about 21.15,and the ISS about 20.40,but it was in the wsw,so I am not sure just what it was,but the other members are certainly correct,it sounds like a Satellite,I believe the light reflected off the Satellite,is called an Iridium Flare.
Regards.
John