In just 7 months a west London regiment has lost five soldiers in Afghanistan.
Today was an opportunity for hundreds to pay their respects to them, and to welcome home to Hounslow their comrades from 1st Battalion Welsh Guards.
Piers Hopkirk was there.
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A 24-year-old man has been arrested on suspicion of murder after the body washed up on the Thames shoreline.
Seven people have now been arrested after a man died from serious head injuries
The 38-year-old officer was on his way home from a night shift when he collapsed. His death is not being treated as suspicious.