I was wondering if this was to be a roll cage with no bends
Do you not have the Plastruct butyrate covered wire in the UK? This stuff is great for roll cages, because it bends and glues easily. Heavier, I'm sure than Carbon fiber though.
Plastic covered wire

Do you not have the Plastruct butyrate covered wire in the UK? This stuff is great for roll cages, because it bends and glues easily. Heavier, I'm sure than Carbon fiber though.
Plastic covered wire