Cor, you're behind the times RR.

No, the small building got demolished (along with the crossing-keeper's cottage) a l-o-n-g while ago when the new road was built along the old railway line. Its remains lie under the two lanes of the A16 going into town at the roundabout junction with London Road.
Added about 10 minutes later: -
Have a feeling that the building was a ladies' hairdressers when the road was due to be built, because my mum used to go there, and then Christine (the owner) moved to a building at the top of Middlecott Close.