"The fire is believed to have started in a property that was undergoing refurbishment work, at one end of a terrace of three properties in residential and office use. The upper storeys of the property collapsed during the fire. The neighbouring properties also suffered some fire and smoke damage.
"Firefighters will remain at the scene for some time yet and a fire investigation officer will begin looking into the cause of the fire later this morning."
More than 80 firefighters were needed to tackle a major fire in Windsor overnight.
No one was injured in the blaze at a building undergoing renovation work in Park Street but it has partially collapsed.
It's believed around a dozen people living nearby had to leave their homes for the night.
Their motto is "be prepared" and preparations are most definitley underway in Windsor as the Queen's Scouts get ready to meet the Duchess of Cambridge. Kate will also attend the National Scout Service at St George's Chapel tomorrow.
We hear from Lt Jack Carefoot and LCH Mark Doran of the Household Cavalry in Windsor. They are among the troops in training at a simulated terrorist camp near Rome.
Windsor-based troops have been put through their paces on a training exercise in Italy. Troops from D Squadron Household Cavalry took part in 'Exercise Eagle' testing the soldiers' reconnaissance and soldiering skills.
It was also a chance to share techniques and tactics with their Italian counterparts. It took place on a simulated terrorist camp at Monte Romano ranges, near Rome.
Several Sunday newspapers are reporting that Tory MP for WIndsor, Adam Afriyie, is being tipped to be the next Tory leader.The self-made IT millionaire from Peckham became the party's first black MP in 2005.
In response to the rumours Mr Afriyie told the Mail on Sunday:
"You are being very mischievous. I supported David Cameron to become leader. I love him and want him to be leader for the next 20 years."
Service suspended on First Great Western between Slough and Windsor and Eton Central due to signalling problem.
Two lanes closed due to accident on M4 Westbound between J5 A4 (Langley) and J6 A355 (Slough / Windsor).