The Nobel winning scientist who discovered the existence of the 'godparticle' will open a new exhibition at the Science Museum today.
Professor Peter Higgs will tour the new one million pound"Collider" exhibition - the most ambitious exhibition at the museum to date.
The exhibition will be devoted to the Large Hadron Collider (LHC), the giant atom smashing machine based at the CERN laboratory in Switzerland, which confirmed the particle's existence last year.
The Museum hopes to recreate what life is like at the particlephysics laboratory near Geneva.
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David Cameron said the Met proved it can "do more with less" and declined to criticise the Mayor of London for his water cannon spend.
A group of disabled activists threw toys and balls at him as he entered the conference.
A wet start to the week and the unsettled weather is set to continue over the next few days.