Good Afternoon. I had a new bathroom put in but decided to keep the old door. The door was in pretty bad shape so the bathroom fitters stripped it down for me and left me to paint. I did this in a hurry for christmas and didn't do the preparation that i should have. The door has some very small holes in it, about 2 mm diameter, which i think may have been left from an old handle. I know i should have filled these first but i didn't. Could someone tell me what filler to use and also if i can get away with filling the holes and then giving them one coat or should i strip this area and fill them, then give it an undercoat and two top coats as i did with the rest of the door. Thanks

You should be able to get away with just a top coat if you prime the filler after you've rubbed it down.
If you use acrylic wood primer it wont sit on top of the gloss like an oil paint will (dont put it on too thick). Next rub it down smooth and apply top coat.
Avoid wood filler for this job, just your normal multi purpose stuff will do.
If you want to cheat, squeeze a bit of caulk onto your finger, push it into the hole, clean off allow to dry and then topcoat.

Good Morning Darren. Thanks for your advice. I have another question about the door. The door used to have glass panels at the top which the fitters took out and replaced with 2 wood panels. They used a glue to fit the new panels which is pretty noticeable and thick in some places as it has squeezed out where the panels join the door. I thought i would just be able to rub it down but this is proving difficult as it is very strong clue but also is difficult to get to with sandpaper because it is in a bit of a groove. Could you tell me how you would go about tidying this up?
Thanks

The sharpest blade you can find, if you can get underneath it and break the seal with the timber it will lift off.
Alternatively you could use a sharp chisel if you've got access. The good things about a paint finish is you can repair with filler any marks you make, just go slow and steady. (and mind your fingers)!