Many thanks dhope for your hint for 23ac. I think I have it, though I'm not familiar with the word used for hairpiece. I'm astounded I didn't get 13d sooner as I was staring at one out in my front garden.
I have now got 4d. 5d still eludes me. I'm assuming it is an anagram of Spain hit, but can't make any word - too many consonants.
I also have problems with 2d,3d. I think I know what the first word should be, but cannot find a word for 3d to fit my crossers, which I am sure about.
I'm struggling to find words that will fit 20ac and 11ac and 16d, so further hints for these would be very welcome.
I shall stop soon to watch the Scandi drama on BBC4, but I'll be back.