I have bites from these tiny bugs, but I can't get rid of the bugs?

Okay this Happend last year, these bugs kept coming they are tiny and can fly and yeah so today I felt bites on my back and saw it looked like a mosquito bite but I live in England I can't, I see them sometimes and keep having to flush them down the toilet I don't know what to do please help?? The bite is... show more Okay this Happend last year, these bugs kept coming they are tiny and can fly and yeah so today I felt bites on my back and saw it looked like a mosquito bite but I live in England I can't, I see them sometimes and keep having to flush them down the toilet I don't know what to do please help?? The bite is red and a bit itchy how can I get rid of these bugs??
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