Why do the arrangements for a meeting where a UK health professional is speaking outside the UK with no UK delegates and the UK company has no role whatsoever in relation to the meeting or presentation not need certification or examination?

Companies are responsible for all activities, materials, items, etc. under the Code. A company's responsibilities under the Code are clear irrespective of whether there are specific requirements for certification or examination. Not mandating certification or examination under the Code does not mean a company is not responsible for ensuring the Code is complied with in this regard.