Need help identifying aircraft?

I think I just saw a UFO but it had a very slow consistent speed and was almost silent, it had two front white headlights and white and red beacon lights on the wings. The headlights were on all the time but the other lights flashed in a pattern. It looked like a plane but was triangular. At first I thought it was... show more I think I just saw a UFO but it had a very slow consistent speed and was almost silent, it had two front white headlights and white and red beacon lights on the wings. The headlights were on all the time but the other lights flashed in a pattern. It looked like a plane but was triangular. At first I thought it was a government plane but I'm not sure. It also flew very low. Can someone enlighten me on what I saw? Thanks
Update: btw I live in Nottinghamshire in the UK.
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