Online Guidelines are not new. The best known are Goss S, Anthony K (2009) “Guidelines for online counselling and psychotherapy, 3rd edition including Guidelines for online supervision” BACP.
More recently BACP published its new Ethical Framework. This is the start point for all practitioners. When you are working online you will need to also read the BACP Good Practice in Action 047 Ethical Framework for the Counselling Professions Supplementary Guidance Working Online guideline by Professor Tim Bond. Supervision and training are (brielfy) covered within this document.
There is also a separate guideline for BACP Social media (audio and video) and the counselling professions