Spalding No.1 signal box is on the railway line from Peterborough to Lincoln and Doncaster. The box was at the Peterborough end of Spalding station and controled a level crosing as well as signals. Note just the a number one is on the box

This signal box was on the railway line from Peterborough to Sleaford and Lincoln on the Great Nothern loop as it is called today. Much work has gone into upgrading this line. This has meant that nearly all the old signal boxes and signals and hand worked crossing gates have all gone. These have been replaced by a new signal center at Lincoln, which is to be replaced, when the York signal Center goes fully on line.