Most jurisdictions use different terms now - so you need qualifications that are pre-requisites for becoming registered or licensed and to undertake work you need to be currently accredited with the regulatory authority (which might require tests too) - and unless you pay the appropriate fee(s) at the specified interval (annually or sometimes for 3 or 5 years) you can't do electrical work. So no such thing a license for life whatever your original said - they like collecting fees!
Advice from me on this forum is general and for guidance based on information given by the member posing the question. Not to be used in place of professional advice from people appropriately qualified in the relevant field. All structural work must be approved and constructed to the BCA or other relevant standards by suitably licensed persons. The person doing the work and reading my advice accepts responsibility for ensuring the work done accords with the applicable law.