Veterans of the Normandy landings will today be treated to a special lunch on board HMS Belfast.
The event is being staged by Hillingdon Council, with big Lottery Funding, to mark the anniversary of D Day and the Queen's Diamond Jubilee.
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But figures show here in London almost 30,000 children in London haven't had that follow-up jab.
The performance will help children discover the sounds that different instruments make.
Fifty-one people died when the pleasure boat Marchioness collided with the dredger Bowbelle in the early hours of August 20 1989.