Trimingham is a village and a civil parish in the English county of Norfolk. The village is 5.9 miles (9.5 km) north of North Walsham, 6.3 miles (10.1 km) east of Cromer and 24.8 miles (39.9 km) north of the city of Norwich. ~Wikipedia
I have not been able to locate this building and I wonder if it still exists. I did find an interesting genealogical page which refers to the Postmaster and Postmistresses.
If anyone can inform me if this building is still there, then please get in touch.