He didn't just want to leave; he wanted to vanish.
DS Sandra Pullman:
Like Lord Lucan? Reggie Perrin?
'New Tricks' - "Into The Woods"
Danny spoke of both men equally as his references. Since Lord Lucan was a historical figure from the real world, and therefore real in Toobworld as well, then great sitcom character Reggie Perrin must be considered in the world of 'New Tricks' as well. (This would be counted toward Reggie's qualifications toward possible membership in the TVXOHOF.)
And for the Toobworld Dynamic, any mention of Reginald Perrin in other TV shows which are set in Earth Prime-Time would be a reference to his original incarnation - played by Leonard Rossiter in 'The Fall And Rise Of Reginald Perrin' back in the late 1970s. All respect to Martin Clunes, but his recastaway belongs in the Land O' Remakes. (As far as I know - I have yet to see it and it could be of a Reggie Perrin Jr.)