I think it is that British support for the underdog coming through, Steve. Pity she was not really the underdog though.

I'm put in mind of a fine song by Stanley Accrington from back in the late 80's

It's Eddie the Eagle, he's out on the slope
It's Eddie the Eagle, he looks like a dope
He may not fly far and he may not fly fast
But we're proud that he's British and he always comes last

Maybe it could be re-written?

It's May the prime minister, she's pushing a bill
It's May the prime minister, it makes us all ill
She may not get out and she may not remain
But we're proud to be British and going down the drain

Not bad for 5 minutes :-)