1: Bounder beheaded by slippery swimmer (3)

3: Intimidated, we tucked into fish (5)

5: Technique for picking up new material? (5)

6: Backblock not all there (3)

7: 'True men' is false (9)

8: Oxygen is pretty amusing. (3)

9: Gag about alien in Royal Childrens Hospital (5)

11: Third stack of paper rises to the top. (5)

12: Cot is unmade for short month in fall (3)

1: Beauty stripping top and bottom is an additional feature (3)

2: Medicine was our connection, we hear (7)

3: Study a French instrument - it's a puzzle (9)

4: English lead getting into the pants of guys (5)

6: Eminent performer in some art form (7)

7: Wise men get introduction to conjuring tricks (5)

10: Pate topping primarily honey and tamari? (3)