1. ITV Report

HMS Ocean anchors in Greenwich ahead of Olympics security drive

Royal Navy's largest ship HMS Ocean anchored in Greenwich. Photo: Press Association

The Royal Navy's largest warship has sailed up the Thames as the military stepped up security preparations for the Olympics.

HMS Ocean berthed at Greenwich in east London this afternoon ahead of a security exercise named Olympic Guardian.

The ship will act as a launch pad for eight Lynx helicopters and a base for Royal Marine snipers.

Simon Harris reports from on board HMS Ocean.

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