They say "John Smith" is England's name most common
When you get the answer, you're going to say "c'mon!"
As you see it's almost all there at the start
Just a little "mark up" and we can race up the chart
To wit, this charming man is a sometime pretender
But recognize for how well he jangles the fender
Who is it?
Irishpanda has most clues explained in the answer, except the "mark up" clue is more of a straight up word play. Our mystery man's last name is a synonym of mark (a marked up item can be said to be "marred") and the title or start of the puzzle "John Smith", with text inserted (or "marked up" in three wordplay meanings) gives both his name and primary affiliation: Johnny Marr, Smith.