http://www.northtyneside.gov.uk/marriage-register.shtml
North Tyneside registrars indexes for Marriages

http://www.southtyneside.info/applications/2/registersearch/default.aspx

South Shields (Tyneside) Registrars BMD indexes

 
http://online.gateshead.gov.uk/bmd/
Gateshead Registrars website for BMD's

 

http://www.darlington.gov.uk/Living/Register+Office/RegOfficeSearch.htm
Darlington Register Office BMD indexes