Crowds gathered outside the Civic Centre in High Street, Uxbridge to pay their respects and observe the traditional two-minute silence .
The First World War officially ended on the eleventh hour on the eleventh day on the eleventh month, in 1918.
At 11am the nation paused for the moment of silence to remember those who have been affected in all conflicts since.
This year, Remembrance Day took on added significance as it is the centenary of the outbreak of the First World War.
In Uxbridge, the two-minute silence had been heralded by the boom of a maroon rocket.
People would have heard it loud and clear from Rockingham Recreation ground, the closest of 11 sites where the rockets are launched.
Just over an hour after the Remembrance Day service, shoppers were evacuated from nearby shops and restaurants by police after a bomb threat was made.
A 40-year-old man has since been arrested and he remains in a west London police station.
On November 9, parades marched through Hayes and Hillingdon to mark Remembrance Sunday.