From the same Guardian article:
"The policing minister, Nick Hurd, said that crime, as measured by the crime survey, was down by a third since 2010 and by 69% since its 1995 peak."
From the BBC article:
Martin Hewitt, assistant commissioner responsible for territorial policing, said: "Similar to the rest of England and Wales, crime rates in London are rising, but many of these are still at a much lower level than five years ago and are against the backdrop of significant reductions in resources.
A 600% increase in acid attacks? A 200% increase in gun offenses? A 70% increase in knife crimes?
London has a lot of knife crime. A 24% increase in such a short amount of time is not a tiny increase in that either.
That's not to mention that we need to look at numbers in a long term trend, looking at 1 or 2 years of data doesn't show the full story.