VectorSigma

Hi guys Having followed the links on this thread (thank you so much!) I have successfully edited the Vectorworks colour palette using the CMYK values to print (within reason) accurate RAL colours. I am now trying to achieve/find out the CMYK values for the BS4800 colour standard. Has anyone got any further info relating BS4800 to CMYK values or if not, a chart/table correlating BS4800 to their nearest RAL equivalent? Many thanks