2021 Top 100
34: Serco Group plc
| Top 100 Revenue: | $1,044,190,000 |
| Defense Revenue: | $649,531,000 |
| Civilian Revenue: | $$394,659,000 |
| 2020 Revenue: | N/A |
| 2020 Earnings: | N/A |
| 2019 Revenue: | N/A |
| 2019 Earnings: | N/A |
| Number of employees: | N/A |
| Headquarters: | Vienna, Va. |
| Website: | http://www.serco-na.com |
| Leadership: | N/A |
| Ticker: | SRP |
| Lines of business: | N/A |
| Major customers: | N/A |
| Major contracts/projects: | N/A |