Way behind as usual. I've managed to complete most of the grid thanks to all the hints above, with the exception of 11 down. I know that there has been some help offered but I am still baffled. This would aid me on the third row. Is this answer three separate words?
Looking at the above is the theme something to do with science/chemistry? Not my favourite topic.
Since all the contributors seemed to enjoy it I won't give up quite yet but there is little optimism in the this sandbank.
We are well into the week if anyone could help me a little.