100 firefighters were called to the High Street discount store around 4.30am today (October 9).
Poundland says it is “concerned at what’s happened” but thankful to the quick reaction of the emergency services.
A spokesperson said: “We were made aware of the fire in the early hours of this morning and are obviously concerned at what’s happened.
“We’re sincerely grateful for the prompt attendance of the fire service and we’re on site alongside them, to help them in any way we can.
“We’ll provide additional updates when we’re able to do so.”
Evacuees were taken to a rest centre at nearby St John’s Church and others urged to avoid the area and close their windows.
There were no injuries reported due to the fire.
High Street was closed for the 15 fire engines, causing “significant traffic disruption”.
The fire was under control around 8.45pm but crews remain on scene to dampen any remaining hotspots.
Bromley Council and MP Liam Conlon thanked the London Fire Brigade for their response to the “ferocious” fire.
Bromley councillor Angela Page said, “On behalf of local residents we are enormously grateful to the firefighters who have been at the scene of this ferocious fire, with their professional dedication and bravery once again called upon.
“This is a very difficult time for all those in Penge but particularly local residents who have been evacuated because of the fire.
“We are reaching out to support evacuated residents in what is fast moving and changing situation.”
