Their cutting equipment fails to penetrate the door, so Scott calls base for ideas on how to reach Lambert. Grandma (voiced by Christine Finn) suggests there could be a way into the vault from the disused London Underground.
When their cutting equipment fails to penetrate the door, Scott contacts base for ideas on reaching Lambert. Grandma (voiced by Christine Finn) proposes that there might be an alternative way into the vault via the old London Underground tunnels.