For commercial, charity or bespoke calendars for  personal use ...

From 2011 until 2015, Barney Douglas published a number of his own brand calendars through Amazon, but a change in Amazon's terms of business affecting UK based sellers more, apparently, than EU mainland based sellers made him regrettably take the decision to discontinue publication.

He does, however, continue to offer content for calendars covering charity  fundraising, (for which he does not charge a fee, but does charge reasonable expenses where incurred), and for commercial use.