A year ago today, four suicide bombers struck in central London, killing 52 people and injuring more than 770.
The co-ordinated attacks hit the transport system as the morning rush hour drew to a close. Three bombs went off on underground trains and the final explosion was on a double-decker bus in Tavistock Square.
County Council worker Stan Brewster, from Swanwick, died in the Edgware Road tube attack. Mr Brewster was 52 and had two children.
More than 30,000 council staff will fall silent at noon today for two minutes to remember him.
Stan was a senior project engineer who worked at the County Council's Darley Dale depot in North Derbyshire. On 7 July 2005, he travelled to London for a conference.
Some of Mr Brewster's former colleagues have been paying tribute to a man the described as 'highly personable'.
Graham Hollett went to college with Stan and worked with him for many years. He told BBC Radio Derby: "Stan was very bubbly type of person - a very outgoing person. He was highly respected. There was never a dull moment with Stan. The banter was there all the time... he was that kind of person.
"Stan was able to bring people onto his side. A lot of the jobs we've been involved with needed that close relationship with the public. Stan was ideal... he was a people person and he was good at that."
Other colleagues remember the difficult days when little about Mr Brewster's fate was known and his family, friends and colleagues had to come to terms with the fact that he was a victim of the atrocities.
Stewart Ibbotson said: "For quite a long time we didn't really know what had happened - except that he was missing. We all hoped and prayed.
"Sadly, as time went on we realised that he wasn't going to return to us - but it took some time before that was confirmed."
Since Mr Brewster's death, councillors unveiled a plaque at the Torrs Millennium Walkway in New Mills, for which Mr Brewster was the project manager for design and construction. Another was unveiled at Pride Park where he was involved with the building of the bridges.
Thousands of people are expected to fall silent at 12 noon today as part of a national two-minute silence to remember those who died in the London Bombings.
You can hear more throughout the day on BBC Radio Derby and see further reports on BBC East Midlands Today at 18:30 BST.
The 7 July Assistance Centre helpline - 0845 054 7444 - is available to provide advice and support to anyone who is affected by the events of 7 July or the anniversary.