Prescribed cannabis? You have a medical defence against the 2mcg/L limit, but...

https://www.mediafire.com/file/rkpx0pv3x6lgq5k/pdf-25878-69659.pdf/file

Prescribed cannabis? You have a medical defence against the 2mcg/L limit, but legality isn’t a free pass. You must still meet DVLA fitness requirements. Remember: your duty to drive unimpaired remains absolute