ring them asap to make an appt and explain how soon u need it. be prepared to spend the day there but make certain you take with you all the documentation they need.
If you havent got in touch today, then u cannot till Mon and u are cutting it very fine.
sorry I thought you said 10 days ! even with 10 weeks you might not get an appt straight away. My spouse needed his Portugese passport renewed and we went personally to the consulate in London for an appt and they made us wait 6 weeks, we spent most of the day there for the appt and we cannot collect for another 2 weeks, whilst they double check everything. So get started soon. Good luck.