North Yorkshire Fire Authority says plans for the Cornish Brigade to answer overflow 999 calls during busy times will improve efficiency and save costs.The current control room mobilising system is being upgraded and should go live next month.
The Authority says one of the reasons for choosing to work with the Cornish Brigade is because they are unlikely to deal with major incidents, like flooding, at the same time.
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The constituency of Washington and Sunderland West includes the UK's largest car plant, which was opened by Nissan in 1984.
This seat was formed prior to the 2010 General Election, taking in Sunderland city centre and the Ryhope area to the south.
The constituency of Stockton South includes relatively affluent areas like Yarm and Eaglescliffe.