37153 speeds north past Sleaford North signal box working an

unidentified down working heading towards Lincoln. The relatively small 1882 Great Northern box controlled the junction to the north of the Lincolnshire town where the station avoider went to the east to then cross the Skegness route and rejoin the Spalding line again, complicated; have a look at a map! It also controlled the level crossing seen here where a minor road crossed the line. The large embankment in the background carries the A17 relief road around the north of Sleaford.