As far as I can tell, Christ Church Parish in Dunston was created from Whickham parish in 1872 and the registers are deposited at Durham Records Office and on microfilm at TWAS.
I can't see anything in the Family Search catalogue for it, nor in Durham Records Online, can't see it listed in the parish list for the NDFHS transcriptions on FindMyPast, nor in FreeReg. and I have a folder full of folk that I expect were baptised but can't find them anywhere!
I am hoping to visit TWAS sometime this year, but I get there so infrequently I like to do as much research as I can before I go so that I can spend the limited time I have there getting copies of the records I require rather than 'fishing' to find out which church they may be in :-)
If anyone knows of any online transcriptions, anywhere I can purchase a transcription I'd be grateful.
Boo