Original: The trains are part of a £3.4 billion contract awarded by the now defunct Metronet to Bombardier to supply new trains featuring Automatic Train Operation and signalling for the Victoria and sub-surface lines.
Simplified: The trains are part of a £3.4 billion contract that was awarded to Bombardier by the now defunct Metronet. The contract was to supply new trains featuring Automatic Train Operation and signalling for the Victoria and sub-surface lines.