Directions. If travelling South on the A167 into Darlington, pass the White Horse public house on your right. At the mini roundabout go straight over and St Mark's is located beyond the roundabout on the left. Parking is available on the street. If travelling North from the town centre passing Morrisons on the left. Carry on up the A167 (North Road) going across the cross roads of North Road and Thompson Street. St Mark's is on the right just after the Leas.