There is enormous controversy over the use of statins and the perceived dangers of high cholesterol.
Cholesterol is in fact, the repair mechanism produced by the liver to repair damage in blood vessels, so is an essential to our health. I'm not sure how the NICE level of 5 came about - I do remember reading that it was a rather arbitrary figure.
There is evidence that for older women, a higher level is actually beneficial:
www.virginiahopkinstestkits.com/statinswomen.html
and: www.ncbi.nlm.nih.gov/pmc/articles/PMC3303886/
Really, unless you have already had a cardiovascular event, statins are a waste of time.
Additionally, statins have side effects which you may not wish to risk: Diabetes, cataracts, muscle pain and worse. These side effects have been played down, but affect more people than has been reported. I was put on Simvastatin at the age of 60 (10 years ago) as my Chol. was 6.4. Within a day or two I hade excruciating muscle pain, and a stomach that felt like lead, so came off them pretty quick, and told my GP I wouldn't take them. He suggested a different brand, but I refused, and was then told to control by diet. In fact, dietary cholesterol makes very little difference to your body's output, so cutting back on good fats will have minimal effect.
articles.mercola.com/sites/articles/archive/2016/02/10/5-reasons-why-you-should-not-take-statins.aspx
And statins are big business - most studies done on cholesterol are funded by the major Pharmaceutical companies and are therefore very biased. I believe GPs are paid to prescribe them, adding to the controversy.
Although not diabetic, I frequently read the Diabetes forum, whose members are very well informed and knowledgeable: www.diabetes.co.uk/
and it's interesting to note that for those who choose to control their blood glucose by eating Low Carb and HIGH fat, often find their Chol. levels improve. And it's well-known that Inuits who eat a diet almost exclusively of high fat blubber have low cholesterol.
So do your research, and make your own mind up whether you want to be taking a medication for life, that may do more harm than good.
A disclaimer: I am not medically trained and have no axe to grind, but I do feel quite strongly about mass medication which in my opinion is unnecessary.
...And I still have "high" cholesterol!