A group of divers from Portsmouth have been recognised for their work mapping the remains of one of the biggest construction projects ever undertaken in Britain.
Two Mulberry Harbours were built along the coast during the second world war and were towed across the Channel to play a vital role in D-Day. Richard Jones reports.
The interviewees are Alison Mayor and Jim Fuller from the Southsea Sub-Aqua Club; and Jane Maddocks from the British Sub-Aqua Club. Underwater footage from Martin Davies.