A great demolition is also an act of creation, so long as its execution is bold and impressive enough, so long as it clears out the dead wood and opens up the terrain. It's the ethos that links Pablo Picasso to 1970s punk, Shiva the Destroyer to the anarchist hero of Joseph Conrad's The Secret Agent. Rip it up and start again. Or rip it up for the pure thrill of the ripping.
Great Tom, St Paul's largest clock bell, will toll 253 times, representing the number of young lives lost to cancer every year in the UK. This will be accompanied by an artwork trail of 253 intricate, colourful butterfly sculptures on Millennium Bridge, leading the way to St Paul's Cathedral. The tribute is part of Great Ormond Street Hospital Charity's (GOSH Charity) appeal to build a world-leading children's cancer centre.