Cheers, David.

roby would be a good shout, or danny brough

I was going to use Steven Gerrard as an example of a not as vocal captain, but then that's one of the reasons why he was such a poor and possibly the worst captain England has ever had.

My concern about Graham is his temper, wouldn't want him to get sent off or suspended in a key match for biting or whatever.

James Graham must be the best choice in my opinion.

Graham for me too.

I think Roby's a cracking player but, I may be wrong, he just doesn't strike me as a captain.
I'd go for Graham.
If O'Loughlin were a couple of years younger I'd have gone for him but I'd use this opportunity of having a set World Cup timeline to build towards it by securing a spine and a leadership group within the England team.
I'd be looking at having:
1. Hardaker
6. Tomkins
7. Widdop
9. Roby

As the spine of the team for the next 3 years so that by the time of the next World Cup they've played together relatively often. In addition to that I think it's important to have a stable captaincy during that time which is why I'd go for Graham rather than O'Loughlin.