Cryptic crossword No 30,163
7, 8, 11, 21, 523’s advice to 25: the reader ‘Ought to Buy Shares in Nanotech’ (Vol. I free) (3,4,7,2,4,3,4,6) 7 across, 8 across, 11 across, 21 across, 5 across. 23’s advice to 25: the reader ‘Ought to Buy Shares in Nanotech’ (Vol. I free). 3 letters, 4 …