When Dave Banks was diagnosed with cancer he wanted something positive to focus on.

So he decided to train his eyes on the sea as watchkeeper along the Norfolk coast.

Now the 69-year-old is a valued member of the team at Mundesley Coastwatch Station who are constantly on alert for the first sign of danger at sea.

With shifts usually just two hours long, the station was able to fit Mr Banks' training around his medical treatment.

Mr Banks, who works for Sainsbury's in North Walsham, has also boosted the station by £200 through the supermarket chain's Local Heroes scheme.

Staff members carrying out voluntary work can earn £5 an hour up to a maximum of £200 a year for their choosen causes.

Mundesley Coastwatch station manager Bob White said: 'We are always grateful for much needed donations enabling us to continue to deliver our vital service here in Mundesley.

'We are amazed at Dave's determination to volunteer for sufficient hours to raise £200 for us whilst he has been fighting such a difficult personal battle. Thank you to Dave for all of your hard work.'

The lookout station which was established in 1995, is one of a network of more than 50 across the nation.

The watchtower, which occupies a former coastguard station, surveys more than 180 square miles of sea.

Anyone wishing to join the team of volunteers should call Mr White on 01263 726859.