Thanks for the advice, we are strimming and burning but not keeping on top of the overall problem.
We have been reading about cider vinegar/salt/vegetable oil mixes as an alternative but amongst the information we have found it says that whilst wet this would still be harmful to bees, so would it actually be any different to using the glyphosate?
Remember you don't need to actually burn the weeds a quick scorch kills most aftr several session the area is much easier to re do so long as you keep it fairly short /.
It ideal for knocking brambles back a couple of times a year once the initial four or five sessions of proper knocking back is done .
You can have a wide flame gun on a 4 mtr hose running off a gas cylinder strapped to a sack barrow … or even put four of five spread flames on a T bars running off a sack barrow like the road workers use from time to time to heat a mtr wide strip of tarmack or roofers use to soften thick roofing felt .
I fitted my sack barrow with a pair of the yellow silicon no puncture wheels after the old rubber tyres & tubes died at 8 yrs old .
Are you a reasonable DIY'er with access to a workshop .. if so make your own burner heads .
Mine is made from a length of 1/2 " bore scrap iron galv gas pipe & a bit of 40 mm x 60 mm long steel scaffold tube for the hood . I welded up an adjustable venturi , used quick release 8 mm small push to fit gas fittings to connect the hose to a hose fitted to the regulator
Flame through a 1 mm home made jet is about two feet long and 18 inches wide , it roars like a tank with out an exhaust silencer on it .
I can't / daren't light it up in the garage …. I might set the place on fire .