An eye witness has described the moment he heard an "earth-shaking" explosion in Ecclerigg near Winderemere.
The ensuing blaze went on to kill a man and a woman, Cumbria Police have said. It is thought that fireworks went off while inside a shed.
Anthony Middleton, from Stockport, saw the blaze and filmed it on his mobile phone. He was on holiday in the area with his family at the time.
Speaking to ITV News Border, he said: "We heard this almighty explosion and the best way to describe that would be a series of earth-shaking cannons going off."
We heard this almighty explosion and the best way to describe that would be a series of earth-shaking cannons going off. We then looked up and saw these exhibition-style fireworks illuminating the sky, which was unusual given that it was a lovely day. We then saw thick, grey smoke bellowing from behind the trees and that's when we knew something was going badly wrong."
Police believe that a man and woman died in a fire at Ecclerig, near Windermere on Saturday afternoon.
Emergency services were called to the scene where a shed containing fireworks was on fire.
A vehicle near to the shed was also damaged by the fire.
A fire which led to the deaths of two people in Windermere on Saturday afternoon broke out in two outbuildings.
Four fire engines were called to a house in Ecclerigg, near Windermere.
"Firefighters were called to deal with a serious fire involving two adjacent outbuildings in the grounds of a large house in Ecclerigg, Near Windermere, with reports that people might be inside the premises.
"Four fire engines from Windermere, Ambleside, Staverley and Coniston were sent to the scene and crews found a well developed fire involving the two outbuildings.
"Four firefighters wearing breathing apparatus used two hose reel jets and compressed air foam to bring the fire under control. Two crews remained at the scene damping down."
Police say two people have died in a fire at Ecclerigg near Windermere. Emergency services were called to Lakeshore House just after 3.30 on Saturday afternoon.
The owners of an historic Cumbrian pub damaged in a fire say they will restore the seventeenth century building to its former glory and re-open.
50 people escaped the blaze at The Queen's Head Hotel at Troutbeck near Windermere last week. Large parts of the roof had completely caved in but most of the downstairs and bar area was saved.
The cause is still unknown.
The owners of a Lakeland hotel gutted by fire are searching for the anonymous person who helped ensure it wasn't burned to the ground.
A farm worker used his quad bike to get firefighters hoses to a nearby beck.
The man has so far not been traced but the owners of the Queen's Head hotel at Troutbeck are keen to find him to pass on their thanks.
Around 50 customers and staff escaped when a major fire broke out a the Queen's Head Hotel at Troutbeck near Windermere. The historic building, which is hundreds of years old, was partially destroyed. Hannah McNulty reports
The A592 near to the Queens Head Hotel, Troutbeck, Windermere has reopened following a major fire at the building. Temporary traffic lights are in place in the area.
The 17th century coaching Inn is owned by Robinson Brewers. The Managing Director of the Pubs Division, William Robinson, spoke to ITV Border reporter Hannah McNulty. He says the company needs to assess the damage and hopes to reopen as soon as possible:
Around fifty staff and customers escaped unhurt from a hotel in the Lake District after a major fire started at the back of the building.
Parts of the The Queen's Head Hotel at Troutbeck have been completely destroyed after it was engulfed by flames last night.
People who were due to stay at the venue have been found alternative accommodation.