The people of Hounslow have turned out in their hundreds for the 1st Battalion Welsh Guards' homecoming parade.
A 60 piece regimental band led 350 soldiers through the streets of the regiment's home town.
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The 47-year-old man died shortly after 3pm on Tuesday.
Specialist explosive detection dogs searched through the town examining letter boxes and phone booths for signs of potential devices.
Temperatures reached 29.1C in St James's Park, central London.