Blossomtime or Apple Blossom dinnerware by Ridgways England and/or Lawley ?Value?

I have a set of antique dinnerware with serving pieces(grandmother's wedding china); there are different marks on the backs of different pieces. but all have Ridgways England. Some have Lawley added. The different pieces have a number stamp on them and the pieces have different small lime green marks under the glaze. These vary, and I cannot tell what they mean -- ?perhaps an inspector's mark??? I am trying to find out the value as I prepare my will and advance directives. Thanks for any help! Shubbles