The Cardiff-based company previously spiral bound by hand and managing director Roger Cottrell said that runs of over 250 were not economically viable.

However, the company installed a Renz AP360 six months ago and a Mobi 500 in July after customers repeatedly enquired about longer runs.

He said: "With the Renz machines we can now handle runs of up to 40,000 books, it has been paying itself off already. Over the next 12 months we will look to increase our workflow and will be advertising our service further afield than South Wales."

Cottrell added that an eighth member of staff had joined the £500,000 turnover company. Two more members of staff are expected to join in the next 12 months.