Hello Cih,
I snipped part of the door and loaded it to Valspar;
They came up with this 'Hinterlands R248C' apparently B&Q will mix it, perhaps they would do a sample pot, you never know.
Cheers - Jim
[edit]
Having found Mr Booth's book I snipped the cover and Valspar came along with the above, 'Catnip R235B'