Bonjour Docbbr. Are you looking for a safety job in UK? If so, I don't really recommend more specific courses (height, PTW) although reading up on these (having a broad perspective) is essential, if not part of your NEBOSH already. Speaking to IOSH might be a good start, see how you can get membership - that helps the UK CV. I would recommend developing your communication / training skills rather than more technical safety ones - all practitioners need these, employers expect them, and they don't come as part of 'safety'. Any course on teaching adults, or training will help. You don't have to be faultless in English, but need to develop and show the ability to connect with an audience, whether at worker level or the boardroom, and to source, (find) or make your own 'learning aids' - these can be photos, pictures, diagrams etc. Come in handy for interviews too.