Mostly OK but printing needs often come with deadlines so timings need to be dependable.
Strengths
Good price. Quality product.
Improvements or suggestions
Stick to stated delivery day and customer instructions. Need to be able to redirect order if the delivery is late (to a completely different national address, not just a different local address, as these were needed for a conference).
In the event you found Copyshop UK with the help of Google, what search key words did you use?
Online printing