Fix Up Edit Meaning

1.

For those not living in London this is basically a way of telling somebody to improve something of theirs, normally coupled with 'look sharp' after the song released by Dizzee Rasscal

Fix up, look sharp

or

Fix up your hair

etc etc

See Hugh Janus

2.

used to tell someone to improve their shit

person 1: i aint got that MC Pitman CD yet yer ner..

person 2: you need to fix up and get it, its a heavy CD