I will not use again.I booked an appointment over their contact centre - 0800 023 2020 and was granted an appointment on 20th June 2019 at Bath clinic (only open on a Thursday). Appeared at the appointed time and they had no record of my booking. wasted an hour of my life getting to and from the appointment - rang their customer care and reported this. More prolific apologies and advised a manager would call me back on that day or the next. Heard nothing! Rang again and put through to a manager who could explain the lack of booking. Last time I used them it took forever to get my glasses from them! Very good clinician but absolutely appalling systems and follow up. Avoid!