Open Question: Are 100% mortgages widely available in the UK?

I am looking to get back on the property ladder with my current partner. I have owned a property before when it was much cheaper to purchase 10 years ago. Had to sell as i separated from my partner then and he wanted his half of the money. The problem is my partner and I do not have much saved up to put down as a deposit. So if we are going to try and get back on the property ladder it would most likely have tp be a %100 mortgage. Are the repayments much higher in the long run. It is so frustrating when you want to make a go of things but are stuck renting.