That's very kind of you Onoff. I'm down in Surrey, so a fair distance away.
However, I went to a Brewers Paint shop today, and they gave me a couple of sample tins of Bedec Barn Paint FOC!
They also recommended Zinsser paint, and said it was as good as the Bedec MSP, didn't require a primer either, and critically, they could mix it to whichever colour you chose.
As the wife is set on some F&Ball colour, my life just got a whole load easier. However, I grabbed the samples as the colours we thought the colours weren't that far off.