...have no idea what it is or how long it's been up there, but it explains the incessant nose picking over the last couple of days. It's a small pink disc, looks like a bit of a sweet or chalk maybe 
He seems fine, but do I need to rush him to ooo docs or A&E to check if he's hidden any other treasures up there, or will it be OK for me to take him to the docs on Monday?
DH has the car and out until late, just tried to ring NHS Direct but they have a message saying they're only dealing with urgent cases and I don't think it is? Gah!