No, JAG certification is awarded to those trained in the UK in accordance with the JAG standards.
JAG certification is not mandatory to undertake endoscopy and it should not be a requirement for employment.
If you are ever challenged on this, please email firstname.lastname@example.org and we can send you a letter to outline JAGs position.
We strongly recommend all independent endoscopists keep a record of their KPIs and some DOPS to use as proof of competence. If your service has signed you off to undertake training, this will usually be sufficient.