Invasion: Deliverance - The Invasion UK series, #4

As the war machine heads south, Eddie Novak infiltrates London and discovers a trap that threatens the allied advance. Cut off and unable to sound the alarm, Eddie must fight his way out of a city bracing itself for an unprecedented and terrifying assault. Across London, Bertie Payne is also trapped by the millions desperate to escape the capital and the approaching conflict. Bertie has a plan, one that will guarantee his safety, but Bertie's plans have a dangerous knack of unravelling at the worst possible moment.
As a ring of enemy steel encircles the city, thousands of fanatical volunteers dig in, determined to make the liberators bleed for every inch of real estate. A storm is heading for the besieged capital, and the innocents caught in its deadly path will pray for only one thing:Deliverance.