@healtywealthy I am in a similar situation except my cholesterol levels are higher than yours:
Total: 7.6
LDL: 4.95
HDL: 1.76
TC: HDL ratio 4.3
Triglycerides: 2
I think mine is familial as my mother was 8.8 in her mid 60s, I'm 63. Pitch perfect BP, no signs of diabetes, no heart disease in my family which is long lived. Mine may also be elevated by a drug for osteoporosis. Like you, I am a little overweight but not obese.
My Q3 risk is low (google and you can work this out for yourself). My consultant has suggested a statin, I have suggested an attempt to address with diet and exercise for three month first.
I have read quite widely and have implemented the following.
White pasta, rice and bread replaced with wholemeal.
No saturated fats: butter, lard, ghee, etc. Replace with olive oil, rapeseed oil, Benecol, etc.
No refined sugars (combining the deletion of saturated fat and sugar that means no cake, biscuits, pastry, pies, etc)
No processed meats: sausages, ham, salamis, etc
Chicken breast and turkey breast
Red meat once a week only
Fish, especially salmon, mackerel, fresh tuna (not tinned).
Very limited cheese, especially hard cheese
Semi skimmed or skimmed milk
O% natural Yoghurt, cottage cheese, low fat quark and low fat Creme fraiche
Garlic, small portions of nuts are good.
More pulses, veg, fruit and more reliance on herbs and spices.
No alcohol and no pop.