Boris Johnson's transport spokesperson Isabel Dedring said the mayor had "more than tripled the level of investment in cycling since he came in".
But she added: "Because the number of people we're seeing in the cycle network has more than doubled over the last few years, we do see very clearly we need to increase that level of investment going forward."
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A police officer who spent six days crawling the London Marathon in a gorilla costume has finally completed the 26-mile route.
A man has been arrested on suspicion of murdering a 48-year-old man who was stabbed to death on a bus in central London.
Transport for London has made the badges and accompanying cards permanently available after a successful trial in autumn last year.