London Assembly member Darren Johnson has obtained data on modelled fire response times before and after the proposed cuts come into force.
The following wards will see first response times worsen by over a minute.
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The pop-up, called, Annie the Owl, will open in Soho in March where guests will sit in the company of owls.
The designs were unveiled as Boris Johnson claimed the flats and houses would be built six years earlier than planned.
Jo Shuter, former headteacher at Quintin Kynaston in Swiss Cottage remembered a "hardworking and aspirational young man".