The message
from Ian White contains these words:

Any specific brand recommendations about genuinely thornproof gloves,
strong enough to let you grab a bramble sucker and haul on it?

With care any cheap thick leather glove should do. Bramble thorns aren't
quite in the same league as thorn and pullable suckers are relatively
small and soft. Screwfix do 'superior riggers' gloves at £1.89 per pair
and 'ultimate riggers' at £2.79. A bit pricy if you want nothing else
but if the quality of the ultimate ones haven't changed they even last a
good while on gritstone walling which can't be said for the cheaper ones
or the skin on my ingers without them.

I use a mattock to dig out mature bramble roots (and thorn bushes, etc).

--
Roger