25 across
Pink
paper
is
tucked
inside
permit,
red
(7)
Pink paper is tucked inside permit, red (7)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The red here means a left-winger politically. Take FT (the Financial Times, famously printed on pink paper) followed by IS from "is", and tuck that whole lot inside LET (meaning permit), giving LE-FT-IS-T.