I've filled the grid but have a few queries before moving onto the end game. So, no explicit answers please but......
1a - I think this has a misprint suggesting an anagrind?
12a - I can't see where the second letter of the answer comes from
23a - This works for me with or without a misprint so not sure if there is one
26a - Can't decide if extra word or misprint (based on definition in Chambers)
2d - can't decide which word is extra
So, nudges or confirmers would be much welcomed, thanks.