Hi,
You can get his name removed from the title deeds. You will need to bring a Civil Action against him explaining why you are entitled his beneficial interest in the property. If not you will have to buy out his interest.
In relation to removing him from the mortgage, most financial institutions will allow this if you are not in mortgage arrears. They still retain their security over the property so it is not much difference to them whose name remains.
I agree with elcato, this is a matter you need to sort. And you will need some level of engagement from your ex-partner in order to complete it.
The end result you want is the property and mortgage solely in your name. However, this will cost you money and depending on the amount he/she paid towards the deposit and previous mortgage repayments they are entitled to compensation.
I definitely would not be coming to these forums looking for advice. You need to speak to a Solicitor. If you can't afford one, please contact FLAC and see if they can help.