Seeing debris falling into your open fireplace is relatively common, and there can be a few different reasons for it.
To preserve the guarantees on your woodburner and chimney, you may well need to have them swept / serviced.
There are new rules in England for the sale of wood fuel. There may be similar changes in the devolved parts of the UK in the future.
It’s relatively common for chimney sweeps to receive a call about a bird stuck in the chimney. With a bit of preparation and care, it is usually freed without harm (or mess!).
The combination of lockdown and cold weather means people are at home using their fires for many more hours per week. Unfortunately for some, this will result in a potentially dangerous chimney fire.
Properly maintained fires and chimneys are very safe but a Carbon Monoxide alarm is there to warn you if something goes wrong.