Londoner wins £1m premium bond jackpot He isn't the only one from the capital who stands to gain. According to the NS&I, there are a number of other unclaimed prizes due to London residents. Among them is a man who won £10,000, but hasn't yet claimed that prize which he won six years ago. He has just £100 invested in premium bonds. The oldest is a £25 win drawn in December 1958. More than 116,000 awards worth in excess of £2.7m still remain unclaimed, Government-backed premium bond provider said. Since the scheme was launched by Harold Macmillan, the then Chancellor, in his 1956 budget, tax-free prizes worth £14.3bn have been paid out.