CapitolSys Technologies was a big company which existed in Great Britain and the United States. Their head office was in Washington DC.
In 2009, Alan Jackson applied for a job at CapitolSys Technologies in central London. He had a job interview and received a letter. He wasn't offered a job in London but at their head office in Washington. After Alan had discussed his new job offer with his daughter Maria and his former wife Chrissie, Alan took the job. He moved to Washington together with Maria. (PROSE: The Last Sontaran)