I have been listening to that Frank Turner a bit recently. He is not bad at all but for me there can only ever be one King of the Punk Troubadours: Patrik Fitzgerald.
There are three main reasons for favouring Patrik: he did it first (and best); he didn't go to Eton, unlike Frank - which, whatever you think of him, has to undermine his credibility a bit; and perhaps most importantly, Patrik is the only one whose name is half of a punchline to a slightly off-colour joke about alternative lifestyles in Ireland.
Here are two of his finest moments:
"Optimism/ Reject" (1977)
"Improve Myself" (1979)
There was another feller in between who was pretty good as well: