We've had the design for the datestone emailed to us from Farmington, we have suggested one minor change to the size of the '&' character, we have made it slightly smaller than our initials, as shown below:

Should look really good hand-carved into our honey coloured Cotswold limestone. Money well spent. Lots of it! Per square metre this is the most expensive thing we've bought by some considerable way!! But probably the best aswell.