Yeah, I'm sure they weren't fireworks! (Despite what my girlfriend thought!)
I watched them for about 5 minutes or so, all rise from the South and pass out to my west, heading up North somewhere, in a long line. I really was surprised I couldn't hear them, but as I say they must have been a long LONG way off, and very high.
When I first saw them, they were very faint, but as they passed to my north-west I could them see the back of them, they became much much brighter, the glow was a little bigger and they were actually flickering somewhat. It had to be afterburners, nothing else it could be. Then the lead 2 or 3 suddenly dissapeared one by one.
Has to be fast-jets, unless I just saw a bunch of UFOs without realising it.... but I guess you can call them UFOs now since I don't know for sure what they were! (No, I'm not trying to say I just saw aliens. PLEASE nobody start talking about aliens!)
Forgot the mention, I tried to take some photos on my phone, but the bad camera just showed the black night sky
