As always, they move swiftly to put your item into production, they use an efficient carrier, and then, most importantly, provide an excellent, high-quality product, for one of the best prices around.
They are my go-to printers.
Strengths
High quality products. Great customer service. Fast. Low price.
Improvements or suggestions
At this time I would say no need. They are doing a great job.
In the event you found Copyshop UK with the help of Google, what search key words did you use?
I am unsure, but it was likely something like:
a5 booklets printing UK
The issue is that copyshop isn't showing if I do that. I am sure that it did in the past.