Paint codes

Hi All, I'm getting close to painting my 68 v8, I have all the details off the bulkhead and it just says white, the car has been painted before and is a creamy white, probably with age, as I'm doing it in cellulose I'm struggling to decide on what white to use. Does anyone have a name for a modern equivalent, maybe from one of the main car manufacturers which I could tell the local paint shop to make up, it's a modern shop and has no idea about old cars, but they will match a sample if I took one in
Might be worth trying a different paint shop. My local shop (in Kent, so no good for you) were unable to do anything from the paint code but produced a very good match just from the year of the car and the name BL gave the colour (almond).