As a terribly easy way out, I'll copy in a bit of Martins sleve notes regarding the album :

There are plenty of bands and individuals playing Scots and Irish music, and indeed, we ourselves have sung, and do sing, stuff which clearly derives from Scoutland and Ireland whence our families originally came, but this is deliberatly an album of English misic, a repertoire often ignored but which has balls (or it's excellently named female counterpart 'clitzpah') enough for anyone...
... this album is respectivly dedicated to two mighty beings, both of whom died in 1996, both of whom cleaved passionatly to notions of 'Englishness', but who would, I think, have been disdainful of any ideas of exclusivity: Dennis Potter and Walter Pardon"