A Navy war-ship will dock on the Thames in Central London later.
HMS Richmond will stop at West India Dock for five days as part of an 'Armed Forces Day' celebration.
This Saturday it will be open to the public, offering a unique opportunity for Londoners to go aboard and learn more about the careers and opportunities available in the Royal Navy.
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David Jones was responding to London's Fire Commissioner who said the term 'fireman' was outdated and should stop being used.