My baby just wont sleep through. He is 1. I am exhausted. Help!

[beakinthebeeswax]

We have this routine.
6.30pm supper
7.00pm bath
7.30pm teeth brushed and bed.
We do this each night. He goes off to sleep nicely, then around midnight he starts. He wakes up and whinges and chatters. I go into his room (I dont take him out of cot) to reassure him. He goes back to sleep. The whole thing is repeated virtually every hour until 7am, which means me and his father (Who works hard as a builder) are worn out.
He is an adorable child, well behaved, happy, eats properly etc. He just cannot settle at night. I have tried allsorts of stuff to remedy this, to no avail.
Does anyone have any tips, or suggestions please?
I would be very grateful for anything you can think of.

You may not see anything yet, I think the teeth shift around under the gums before they break through. My ds is so much happier now they have broken through after weeks of misery.

Calpol is the way forward. His sleep has improved over last few days.
I hope its not much longer for you.

He just had late night tonight, he has gone to bed now no problem.

Hope he stays asleep. He is teething like you all said, his cheeks have been bright red today and he has had some calpol.

Thanks everyone!!!!