• News this week that The Magazine building in Kensington Gardens – which dates from 1765 and was built to house munitions initially intended to help repel a Napoleonic invasion – is getting a new lease of life as an art gallery. The Royal Parks have awarded the Serpentine Gallery a contract to create a new art space – the Serpentine Sackler Gallery – in the building. Pritzker Prize architect Zada Hadid will oversee the renovation of the building which will be open in time for the Olympic Games in 2012. PICTURE: John Offenbach © The Royal Parks and Serpentine Gallery.

• A Blue Plaque commemorating singer, songwriter and one-time Beatle John Lennon’s stay in a house in Marylebone was unveiled last month. Yoko Ono unveiled the plaque at 34 Montagu Square, where she and John lived in the basement and ground floor flat in the latter half of 1968 when Lennon was working on The Beatles’ White Album. It was the first home the couple shared and, while Lennon lived at a number of London addresses between 1963 and 1971, of those that survive it is the home he occupied for the greatest period. Previous occupants included Ringo Starr, Paul McCartney and Jimi Hendrix.

• ON NOW: Titanic: The Artefact Exhibition will be held at the O2 from 5th November until 1st May. The exhibition traces the Titanic’s final journey, from Cherbourg on 10th April, 1912 to its sinking with the loss of 1,500 lives after striking an iceberg three days later. Featuring more than 200 artefacts from the ship, the exhibition includes recreated interiors from the ship. Tickets start at £13 for adults. For more information, see www.titaniclondon.co.uk.