Cladding using a composite aluminium panel with a polyethylene core would be non-compliant with current Building Regulations guidance. This material should not be used as cladding on buildings over 18m in height.
As background –
This has been independently backed up by experts including Sir Ken Knight (former commissioner of London Fire Brigade, -Number witheld- and Martin Conlon (Chairman of the Building Control Alliance, who has already made a similar statement to the BBC).
Building Regulations guidance, Part B: Chapter 12 (p93/94) – external wall construction: https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/441669/BR_PDF_AD_B2_2013.pdf.
We can not comment on what type of cladding was used on Grenfell Tower building – this will be subject to investigations.
BS 8414-1: 2002 – Fire performance of external cladding systems.
Test method for non-loadbearing external cladding systems applied to the face of a building.
BS 8414-2: 2005 – Fire performance of external cladding systems.
Test method for non-loadbearing external cladding systems fixed to and supported by a structural steel frame.
But neither were reflected in the Bregs Part B