Well now Altonator what a different tale it is from when you first posted. You have zero deposit and you want your parents to buy a house for you, in a country you are not living in, because it is cheap.
Did you know living in Ireland is not cheap either, but houses in some parts are. Mostly places nobody wants to live (no I'm not going to name them but we all know where). They built an amazing amount of crap apartments in Ballygobackwards that should never have been built. People want houses. Not apartments. And even the houses they did build, they are in many cases a disaster. I mentioned on the Priory hall thread a couple of years ago that I was positive there were other Priory halls and was dismissed, especially when I said the authorities knew there was but will not examine those buildings as they don't want to be caught like DCC (Dublin County council) and low and behold, just a month ago, about 8 houses burnt out because of a fire in one and no firewalls due to shoddy workmanship and zero state inspections.
You have in addition little chance of any decent employment in the West of Ireland - have you even looked into this? And the West is some treck from Bristol. Have you seen the roads once you leave say Galway and head to Mayo or Leitrim.
I think you need to rehink this plan. So some more questions. Are your parents Irish? Do you have qualifications that would easily get you employment elsewhere. Why have you no deposit saved despite telling us you have spare income. Do you think it's right that your parents would pay your deposit, mortgage the house they have worked all their lives to own, and in their late fifties take on the liabilities of your dream for you. Of course they want the best for you, but is it right for you to do that to them.
On a more practical level, why not buy in Bristol or Bath something you can afford, and if you cannot afford something now, how about saving, getting a better job through re education and securing your own future. How much is a property in Bristol, and what exactly have you looked at.
What is wrong with you continuing to live at home if it suits where you work and your parents are happy for you to do so, though I do think people should leave home but sometimes it doesn't happen.