Hi MOy,
if u are using the checking service they will photocopy everything and give back the originals ..have u tried calling them back again just to get a schedule? when are u planning to submit your forms? ..i find it easier to use the checking service because i got dependent who have used(MN1) if theres anything wrong with the application form they will tell u , they can even photocopy a new page just for u to correct some mistakes written on it.
btw, i have submitted my latest p60 together with all my other documents(passport/m.cert/brp) to support my dependnts app form.
good luck!!