It’s difficult to tell from your photos, but I think it would be unlawful to dig it up. I’m sure someone with more knowledge on this will be along soon.
Another vote here for Echium vulgare ... flowers look sort of tubular with longish stamens, whereas gentians have five distinct petals with shorter stamens.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
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Not Gentiana sp.
Maybe Echium vulgaris.
https://www.plantlife.org.uk/uk/discover-wild-plants-nature/picking-wildflowers-and-the-law
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.