all answers have 2 words starting with C P

[mormond]

1) Typists duplication aid before photocopying days

2) Slang term for a crazy person

3) Another name for Lords & Ladies (plant)

4) Term used in connection with tyres

5) Concert for the Queen

6) Part of male apparel around the Elizabethan period

7) A temporary military headquarters

[sara3]

1) carbon paper

[sherrardk]

1 - Carbon paper

[Jan1957]

5) Command Performance

[sara3]

↑ and that's how it works ;o)

[Answerprancer]

3 cuckoo pint

[JMR27]

7. Command post

[sherrardk]

5 - Command performance?

[Answerprancer]

4 correct pressure

[Jan1957]

6) Cod Piece

[JMR27]

6. Cod piece

[JMR27]

4. cross-ply

[Salty]

2. crack pot

[JMR27]

2. crack pot