The first part of 1D is the name of an English cicketer (I think 'turner' = spinner).
The second part appears to be using 'filler' thematically (as in what's filling the hole) the wordplay = 3 letters for ''What's discharged'' [physics] + TO + the usual 2 letter abbrev for 'papers.'
There are lots of empty squares and the shape isn't symmetrical, hankir (some words start on the left and end on the right with a gap/gaps on the inside).
I'm away from home and typing is a bit trickier than usual, hope this helps without giving too much away.
...you're right about answers not having to start in the numbered squares, eg 13d doesn't, 3a doesn't (even though the letter in the numbered square matches the first letter of the answer) 11a doesn't...