RM4SCC
The RM4SCC (Royal Mail 4-State Customer Code) is used by the Royal Mail and encodes the UK post codes and delivery point suffixes, as the following example illustrates.
Rm4scc barcode = new Rm4scc("20815470412");
barcode.Draw(pngFilePath, 300, ImageFormat.Png);
Dim barcode As Rm4scc = New Rm4scc("20815470412")
barcode.Draw(pngFilePath, 300, ImageFormat.Png)