9a One unearthing facts about brand used by actress/singer(10) R?S?A?C?E? Have put RESEARCHER but don't know why e.g. brand, actress singer.
6a Could they be evens? Yes and no ?D?E Have put EDGE but don't know why - e.g.not a plural but an edge could be even or uneven.
13a Big party or, put another way, major bee (8) ?A?B?R?S No idea for likely answer.
I see my mistake. For 8d Was in the forces, losing heart, having joined up(8) I had put enlisted. No wonder I couldn't get 6a and 13a
Thanks for putting me right once again!!