The typical off-peak service per hour consists of 8 trains arriving and departing Fenchurch Street : On Sundays , the non-stopping service does not run and the Grays via Rainham service is reduced to an hourly shuttle from Barking .
The normal off-peak service are of eight trains per hour ( tph ) coming and leaving Fenchurch Street : On Sundays , the non-stopping service does not run and the Grays via Rainham service is reduced to a 1 tph shuttle from Barking .