Positivity2016
Unlike your sending a letter Recorded to an individual (or even a lot of companies), the DWP receives such large volumes of post daily that it is dealt with by the basket full, the big one you often see in supermarkets full of cornflakes or the like.
The important thing is that it has been delivered and you have the date for this.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems