I live in Cambridgeshire and have found many of these little beetles in my paintings and photographs. I thought they may be woodworm, hopefully not, but looking at my picture frames there are no holes or anything so a little stumped. They are very small and difficult to picture however I have tried my best using a magnifying glass and my mobile phone. Hopefully someone can tell me what they are and whether I should be worried about them, I must have come across about 500 of them at least!
I don't think these are beetles, I suspect that they are thrips (Thysanoptera). They do tend to find their way indoors in cold weather. They are also an indoor plant pest - in fact they have been known to cause problems for people growing cannabis... Do you have any house plants? ;-]
Thank you for your quick response to my question.
I only have a single orchid in my house which I received after coming across these little bugs so dont think that is to blame. In fact, I believe they may have come from a picture framing company called APB Framing in Huntingdon that I used a while back as it looks like all the paintings and photographs I have had framed by them are infested with these small bugs and no other pictures are affected.
I've googled pictures of thrips as you suggest and they do look very similar although I dont think any of these bugs have wings, well, none that are visible. I am going to buy a microscope so I can look at them closer and hopefully be able to provide a much closer picture should I think it is something other than thrips.
I will let you know how I get on.