18A Precise, if pointless, set of instructions (6)
24A I can always be part cut (5)
27A Wise men coupled with robotics gives us primitive weapon (7)
14D Curve head for feeling coy (8)
16D .....200. Coould be urn (7) ( Yes, it was written coould)
19D Monthy Python sketch becomes mathematical, it's said (7)
Sorry, no letters - it's the entire bottom left corner.
13A Grab measure that's carted around with you (7) which i think
may be Baggage, which would give A as initial letter of 14D