Brambles growing In hedge

That won't do much; you need to fully dig them out.

Keep them trimmed back. Enjoy the free blackberry harvest in the autumn and feel good about them feeding the birds and other wildlife.

I enjoy removing brambles from hedges as a Winter task

I leave them where I can, but when they are a nuisance by a footpath then I remove them each Winter, saves having to untangle 20 foot bramble monsters in the summer heat

In Winter there are minimal or no leaves in the deciduous hedges, easy to see the brambles and their thorns

Long armed welders gauntlets are less than £10 online and just as effective as the horticultural variety

use a trowel, spade or a hori hori to dig out and pull most of the roots up

Keep it up gradually each year and the problem will be removed

Or apply a weedkiller to the fresh growth.

Fire. The answer is always fire.

Did I ever tell you lot about the time I set the garden on fire. The grandkids still remind me of it on a regular basis.

Accessing the roots is a problem because of the thick hedge. Gauntlets maybe, If only to own gauntlets

I agree with the trim ‘em and enjoy the tasty treats in autumn

They are part of the hedge, leave them in but trim back any protrusions. I'm currently planting hedges and brambles are definitely going in. There is protection from grazers which encourages saplings to grow on unmolested until big enough to be less vulnerable. Also safety for nesting birds from cats

I used to cut back brambles as part of my maintenance routine when I was a Sustrans ranger. Bastard things seem to grow a foot or more in a day, and the really nasty ones grow up through a large Hawthorn or blackthorn tree, along the branches then hang vertically down into the middle of the track - not a pleasant thing to catch you in the face when riding along while it’s misty or foggy.

I’ve got some leather welders gauntlets that I bought for that very purpose, many years ago, about 25-ish, and I use them for trimming my Pyrocanthus hedge - as evil as anything, that stuff! I think you can get them from Amazon, about a tenner or so, every home should have a pair or two.

it’s STW! Surely ooni pizza oven gloves? Possibly the most beautiful, soft, cosseting welding gauntlets I’ve ever put on*. Like driving gloves for a Sherman tank.  Utterly useless for tending to an A3 sized pizza oven but brilliant for all the other welding gauntlet type tasks ‘round the house.

*they were a present.

Decent quality leather gardening gloves were good enough for me. Snip in a few places with secateurs and yank them out.

Cut as low as you can and get some SBK on the stump that’s left. Does the job ime.

Or apply a weedkiller to the fresh growth.

Please don't use chemicals in a place such as a hedge which is home to a significant amount of wildlife, bugs and good microbiome.

I had this problem, now i just leave them as they are good for wildlife. I occasionally trim off any long annoying shoots when I can be bothered.

Chemicals can be applied directly to the brambles not broadly.  Best to cut the brambles back then treat the fresh growth,  little should be needed.

Please don't use chemicals.

I trim them back if they're sticking out over the path, otherwise as mentioned above leave for the little creatures and birds to enjoy in the autumn.