You should to write and set out your losses and ask that they fix within 14 days or say you will go to Court. Make sure you send this recorded delivery and keep a copy. If they refuse then you can issue proceedings which can be done online at: www.moneyclaim.gov.uk or by competing form N1 at: https://hmctsformfinder.justice.gov.uk/courtfinder/forms/n001-eng.pdf
The Court will then issue the claim which will be sent to the seller and they will have a limited time to defend it, if not you can enter Judgment and enforce it. If the matter is defended it will be set down for a hearing. If the losses are £10,000 or less then it will be a small claim and you do not need representation. Can I clarify anything for you about this today please?
The Court is likely to consider the experts report and decide whether to make an Order making them investigate and/or carry out the work
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