How to classify monitors (item - subheading HS)
CRT monitors solely or principally for use in an ADP system - 8528.42
CRT monitors – other 8528.49
Flat screen monitors solely or principally for use in an ADP system - 8528.52
Flat screen monitors - other, with acceptable functionality when used with ADPmachines - 852852
Flat screen monitors - other, lacking acceptable functionality when used with ADP machines - 8528.59
Projectors solely or principally used in an ADP system - 8528.62
Projectors other than solely or principally for use in an ADP system - 8528.69
TV reception apparatus lacking a screen - 8528.71
TV reception apparatus incorporating a colour screen - 8528.72
Source: https://www.gov.uk/guidance/classifying-monitors-for-import-and-export, 24nd August, 2017