We have had an local independent for years. I have in the past drifted to Boots, Specsavers and at one time Dolland & Aitchison, but have always returned to the local. Mrs B tried Boots a couple of times but returned to the same independent.
A someone who before cataract surgery had complex lenses and still needs their eyes monitoring for other reasons, I like the personal services they provide and the time they take to undertake checks, etc. The last time I went, the optician showed me Youtube videos of a procedure I am due just before Christmas and explained what would happen and why. The opticians there have also fought my corner in a couple of battles with the local hospital when I have needed surgery and are willing to haggle about prices for lenses and frames.