It's very like him.
I'm not sure if I prefer paintings that have a bit more of an individual 'style' to them - iykwim - rather than being so almost photographic - that's not a criticism, it's excellent, but all it says to me is 'This is Tony Blair', not 'This is what I think about Tony Blair'.
Does that make sense? (talking as someone who paints people too)
Maybe that was the brief in which case it's superb. Well it is anyway.
I just find it hard to 'like', well maybe that's par for the course with TB 