Bad plastering... advice please!

I'm getting quotes to put right his work this coming week.
As for evidence I'm going to write him a letter stating “The Consumer Rights Act 2015" I'm guessing this comes in under this? That I'm not satisfied with the work carried out.
He has verbally said that he would re skim but that's not what I want.
What other evidence will I need?
Ideally I want the whole lot back so I can get someone in to fix the problems. Shall I state that in a letter to him?
This is the first time anything bad has happened regarding bad workmanship so any advice on what to do with getting my money back would be greatly appreciated.
He's now removed his company from the internet and Facebook page. So I'm not sure what he's planning to do... maybe quit plastering?!
I've not actually spoken to him since Friday where he said he will be bringing someone here tomorrow for a quote to line the walls - I don't want this as I do have children which is not ideal and I paid him for plastering not to bodge it up and then Go over with paper.

Not even one thanks for the people trying to help here , there's no manners these days and cost fook all , people are actually talking time to help you . Over and out . You last post isn't going to satisfy the court either

Actually I have said any advice would be greatly appreciated. I've never been in a situation like this before and came here for help. Obviously I appreciate what everyone has said. I do have manners so I don't know where that comment has come from. I'm new to the forum I'm still getting used to how to use it. But thanks to everyone so far that has been kind enough to help. Stressful situation for myself and I'm trying to sort something out

he means press the thanks button.

- you don't need to quote the consumer rights act. (yes his work is covered under it) you either ask him for a refund so you can get someone else to do it or you give him a chance to correct his mess. your claim will fail most likely if you don't give him a chance to put it right. that's why i said one room at a time.

Your best option is to get him to pay you as much back as you can. before he spends it.

Does he have assets? own his house etc? If you sue and win. what are you going to seize if he doesn't pay.

Could you please clarify whether you have actually handed over the payment. Your tactics will need to be different, depending on that. Further advice will be forthcoming, but there is no point in talking about irrelevant routes.
If you have paid him, why did you do so if the work was unsatisfactory?
You should not even consider having the walls paper-lined; that is not what you requested and contracted to have done.
I am presuming that you would prefer to have the walls finished to a reasonable standard of skimming. You must give him a chance to try to rectify the work, as you cannot claim that he has done anything so seriously bad or dangerous as to cause you to fear serious damage if he tries to rectify it.
At this stage, you should not engage another plasterer and the opinions and cost quotes that such tradesmen may give you will not have (much) authority if it develops into a small claims court case. They are not quite disinterested parties, as they may be considered to have an interest in getting work for themselves. However the quotes may be helpful in deciding your way forward.
I would be worried about him having taken down the web site; if he closes the company down, there may be no way of enforcing recompensation.
(As for the comment about "thanks" ; you have probably not noticed that there is a "thanks" button at the bottom right of each reply. It appears when you hover over a reply. Some folks like to see it used! )

The quotes will help establish quantum but i agree they won't be seen as impartial. That said given he'd be liable for the cost if he lost,it wouldn't be wise to dispute the opinions and get a court expert adding cost to the claim.

I think from earlier posts we can conclude that the OP has paid £3k.

PS.
When he calls to get his estimate for lining the walls, it would be a good idea to have someone (not family) with you, who could keep a note of what is said. If the plasterer agrees that rectification is needed, then you will be in a better place.

Thanks everyone for the advice and help. We have reached an agreement this morning as he popped in. He has said he doesn't want try and fix the problem as he doesn't think he can get the finish that would be acceptable and has held his hands up and is going to fully refund for the job. So I did give him the opportunity to put things right and he has declined which will be set out in writing along with a full refund will be given and further action will be taken by myself against him. So again thanks to everyone that has commented and advised me.