Hi same here, mine approved on 12th March 05:50 am and since then no update
I imagine the weak link here is TNT getting them on their system – the passport printing facility is an automated process, from looking at a video online I am sure it’s not the delay here, it’s capable of printing huge numbers of passports. So I imagine the scanning of the printed passports onto the TNT system is taking the time – this seems to generate the ‘printed and sent’ update on the application. TNT have a track record of poor performance with HMPO deliveries – looks like nothings changed, and quite frankly it’s not good enough – passports aren’t cheap!