It's normally called the "Shy Tory Factor" in the UK; Wikipedia has a page [1] but it's a bit thin.
After the 2015 GE the British Polling Council commissioned an independent inquiry on the subject, whose findings you can read here [2]. (Disclaimer: I haven't.)
[1] https://en.wikipedia.org/wiki/Shy_Tory_Factor
[2] http://eprints.ncrm.ac.uk/3789/1/Report_final_revised.pdf
What strikes me is how counterproductive this all is - in this week's case the inaccurate polling made the final result far more of a shock and thus presumably far more disruptive than it would otherwise have been. It may even have caused the final result - I think turnout for the under-25 demographic, which skewed heavily Remain, was only about a third, and I've seen several comments to the effect of "I didn't think I needed to vote, Remain was ahead anyway".