It might be worth looking at the cabair website. Im an ex student and i know they are looking for instructors on the commercial side. They have advertised about part sponsorship for new pilots/FI's so it might be worth giving them a ring or check out their website.
And before anyone slags them off too much as i said im an ex student and have been through the mill with them and im only trying to give Nibbler ALL the options.
Just one more thing...be a little careful on the figures of 1500 hours for Sierra academy mentioned. I think the poster got confused with actual flying time compared with total time including classroom time and possible instructing....or maybe im missing something