Board Thread:The Panopticon/@comment-4139960-20150919113609/@comment-5918438-20151218060850

Issue and volume numbering can be taken totally separately. In this sense, issue 1, or TCH 1 I suppose, would be that which includes volume 55.

Once the entire series is released, you could look at it either in terms of issues (order The Complete History has been released in), or volumes (beginning of Doctor Who to present day).