I recently had a terrible experience at the London-Dalston branch. The optician provided me with a wrong prescription and charged me for a test that was supposed to be free. When I went in for my appointment, I was informed that some of their equipment was broken and that they will need to do the test manually. Despite this, they went ahead and prescribed me new glasses, expensive varifocals was their advice. As a result, my prescription was incorrect after comparing it with the one done at another optician days later, where they told me I didn't need varifocals yet. To add insult to injury, I was charged for a test that was supposed to be free as I have diabetes. When I questioned the charge, the optician claimed that it was strange that it happened after I reported this before the test and offer me to do a new test, but also asking if I would be interested in any of their frames... Overall, I would not recommend this optician to anyone. Their inability to provide accurate prescriptions and their willingness to charge for services that should be free is unacceptable. Save yourself the hassle and go somewhere else for your eye care needs.