Serco is one of the three companies that make up AWE-ML - the joint venture company with the contract to run AWE Aldermaston and Burghfield until 2025.
Serco are a UK FTSE-100 company with diverse contracts which include managing detention centres, prisons, hospitals, schools and public transport. Typically almost 30% of their turnover comes from the "defence" sector worldwide.
Because Serco are floated on the London stock exchange it is possible for AWPC - and others - to hold shares in the company. Shareholders are entitled to attend the company's AGM, ask annoying questions and arrive on their doorstep requesting an inspection of the accounts.
Here you can find some stories relating to AWPC's Serco shareholder campaign.