National Savings and Investments has announced details of a new TV advertising campaign to promote its premium bonds .

The promotional campaign comes in the run-up to the anniversary of the first premium bond prizes handed out in June 1957.

And people who are planning to put money into the savings and investments vehicle may be interested to know that their prospects of winning the jackpot have temporarily been boosted by 150 per cent.

Whereas there are normally two £1 million jackpot prizes on offer in the monthly draw, the anniversary lottery will see this boosted to five.

Moreover, there will also be more than one million other prizes worth £100 million to be claimed by lucky winners.

In recent years, National Savings and Investments premium bonds have been promoted by entrepreneur Sir Alan Sugar, founder of computer company Amstrad and now famous for his involvement with BBC reality TV show The Apprentice.

Backed by the Treasury, premium bonds were launched by chancellor Harold MacMillan in November 1956.

They were conceived as a method of encouraging people to start saving money by combining savings with the excitement of a lottery draw.