Navigating UK Bureaucracy: Council, HMRC, NHS in One Hit

Moved house, had a kid, changed your name, gone self-employed: each one means telling half a dozen organisations, and missing one bites later. This builds the full notification list in a single hit, council to HMRC to NHS to DVLA to DWP, so you work through it once instead of remembering bits at 11pm.

I have recently {LIFE_EVENT} (e.g. moved house, had a child, changed name, become self-employed) and need to notify multiple UK organisations. Generate a complete notification checklist covering: Local council (council tax, electoral roll, parking permits, benefits), HMRC (tax code, self-assessment, child benefit, tax credits), NHS (GP registration, prescription prepayment, NHS app), DVLA (driving licence, V5C), DWP, and any other relevant bodies for my situation. For each organisation, provide the exact method of contact (online portal, phone, post), what information I will need to hand, typical processing time, and any penalties for late notification. Prioritise the list by urgency.