The Chancellor has announced that the Northern Line will be extended to Battersea, as part of his Autumn Statement.
George Osborne also announced £1 billion of investment in the country's roads, including upgrades to the A1, the A30 and the M25.
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The painting, entitled 'Beautiful Beautiful George Michael Love Painting', was auctioned to help raise funds for HIV and Aids prevention.
The 38-year-old victim was standing on a busy Victoria Line train when another passenger approached him.
The boy, called Roman, told police call handler his mum "is dead" and "she's closing her eyes and not breathing".