AAIB have published a summary of investigation into G-OHCP accident in Mar 2018 bulletin.
https://www.gov.uk/government/upload...018_Lo_Res.pdf
From the Conclusion
Conclusion
The accident occurred after the helicopter entered cloud while descending. The pilot did not
carry out a 180° turn away from the rising ground and probably did not regain VMC before
impact with the side of the mountain