Tie your hair in a low pony tail with a bobble. Make sure you leave your parting visible. It doesn't have to be too neat a pony tail. Pull your hair apart above the bobble to create a sort of hole through your hair. A kind of "nest".
Fold the pony tail in half and tuck the ends into the hole.
Starting from the bottom of your folded pony tail, roll it up towards your head and tuck in any loose bits.
Secure the back with some kirby grips. Don't worry just yet about any bunch bits at the side.
Sorry for the blurry photo! Take any bunchy side bits and roll them up into the rest of the roll and secure them with a kirby or two.
Ta da! Pull down a few strands at the sides or the front, if you want.
And I just paired it with a blouse and tied a neck tie round the collar.