Mayor Boris Johnson says 174,000 men and women are missing out on an extra 35-pounds a week.
So as part of his "Know Your Rights" campaign, he's urging the capital's older residents - and their carers - to check they're getting all the payments they're entitled to.
The details now from Liz Wickham.
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Acting Commissioner Craig Mackey led new policemen and women in paying their respects at a passing-out parade in Hendon, north-west London.
The tour of European capitals was timed to coincide with the start of the Article 50 process to exit the EU.
The Football League will introduce the project if the family of PC Keith Palmer supports the idea.