Use of arms: how flexible?

[d***@gmail.com]

I have recently seen the use by an organisation of their coat of arms, which are correctly Or with gules and proper charges, in "corporate branding" using a version which doesn't tally with the blazon: i.e. it is rendered as if a monochrome line drawing, except for the saltire gules (which is rendered in gules)

Is that, strictly (in England, btw), lawful?

[Peter Howarth]

One of the principles of English law is that everything is lawful which is not specifically prohibited. I know of no such prohibition. Seals are monochromatic and, in the days before full colour printing, arms were often represented with only one or two of the tinctures. The organisation's arms are theirs to do with as they wish.

Peter Howarth