Wrong GP's dats for a hotel called Little Hallingbury M
I own a hotel called Little Hallingbury Mill on Old Mill Lane, Gaston Green, CM22 7QT, but the sat nav sends cars to another Mill Lane in Hatfield Heath a couple of miles away. It used to be once a month, but now it's daily. So I need to get Sat Nav updated. My GPS is 51°49'51" N 0°10'10" E. How do I do this?