Tackling an overgrown allotment with a bad back

Hi DiggyBob,

Incredible job and I deeply sympathise with you for the toil!

What you can do to further curb bramble growth is use glyphosate (I found this to be the name of the herbicide in your country). I had to fight wild hops (and I'm not in the mood for beer brewing :D). Use concentrate on cotton balls. Work with protective gloves on a sunny day with no rain and wind on the forecast for minimum 24 hours ahead. During active vegetation, cut back the new bramble growth to 1-2 leaves from the base and treat the freshly cut stem and the surface of the leaves with the herbicide, by rubbibg it in.
Repeat treatment if needed.
This has to kill the roots after some time.

Hope this spares you some strain of digging or pulling to uproot it.

 

in the mean time

Using an azada - YouTube

 

Azada = Grub Hoe, Mattock, yeah, I had to google it too :D