National Police Air Service Barton have released new footage of the fire in Salford taken from their helicopter.
Forty fire fighters were needed to bring it under control.
A nearby rail line was suspended for a time this morning over fears the building could collapse.
More top news
Mainly settled, cloudy and cold by day this weekend. Fog and frost becoming more extensive each night
Leader Paul Nuttall is confirmed as UKIP's candidate to contest Stoke Central by-election following Labour MP Tristram Hunt's departure.
The pair, both aged 16, appeared at Chester Crown Court today in relation to the death of Lee Briggs.