George Galloway (not technically Labour but of that tribal background):
For a certain class of Englishman every Catholic is a Mick and every working-class Scot is from the Gorbals.George Foulkes has made similar claims.
So allow me to clear something up for insular West of Scotland Labourites.
Almost no one outside of Glasgow, Belfast & Possibly Liverpool* could care less about the religious background of Michael Martin. If the Conservative Party can elect catholic leaders like Iain Duncan Smith and catholics like Ann Widdecombe are being touted for the speaker's chair then where exactly is this concentration of sectarian bias?
The criticism of Michael Martin has no more because he is Catholic than criticism of Gordon Brown is because he is Presbyterian.
* There isn't much current evidence for a sectarian divide in Liverpool as far as I know, but there did used to be, see the history of the Liverpool Protestant Party for example.