I had some broken cloud from Irvine, Ayrshire to the north and northeast, 23:30-00:10 UT but didn't notice any obvious NLC. Given the conditions though, I could easily have missed a small or faint NLC in that part of the sky.
Weather here has been dismal for several days now - I notice the forecasts are looking better for later tonight though...
Can anyone tell me if these are NLC as they were so bright ?
As John has already mentioned, it's never easy to decide from photographs alone. The standard advice when unsure is to examine the 'NLC' through binoculars. Tropospheric cloud tends to look blurred and diffuse through binoculars, NLC doesn't. The other useful technique to use is time lapse photography (fairly easy to do with digital photography). Experience helps, of course, but, as we've already seen on other threads here, even experienced observers are sometimes unsure. If an observer is not 100 percent convinced then the best idea is to report it as a 'possible', confirmation can then be sought.
Thanks again folks. I suspect that it was mostly Tropospheric cloud with perhaps a NLC but what I did notice is that most of it did move away and of what I have seen of NLC so far (which isn't a lot) it doesn't seem to move greatly. So I am just going to put this one down to Tropospheric Cloud unless someone else confirms NLC.