If there's any examples of cases, please use UK law

You act for Mr & Mrs. Brown. They recently purchased a beautiful house from Mrs. Betty on the 1st of January 2020 in an elite neighbourhood, the main attraction of which is the ceiling to floor glass windows. The contract specified that all "existing fixture & fittings" would be included in the sale price. These items however were not itemized nor were they specified in the contract of sale. You client informs you that the real estate agent one Mr. Adam had told them verbally that a car would be included as part of the package. On signing the agreement and obtaining the keys, Mr. & Mrs. Brown discovered to their astonishment that no car was on the premises of the house. They have now approached you as they wish to sue Mrs. Betty for breach of contract. When they brought the matter to the attention of Mrs. Betty, she told them in a very rude and sarcastic and loud manner that the car was not part of the sale, and they were already purchasing her house at a bargain. She then threw a stone at the front door of the house shattering the glass doors, Mrs. Brown felt most insulted and traumatized by this incident and sought medical treatment. YOUR TASK: 1. Mr & Mrs Brown have appointed you as their lawyer and the couple seek your legal advice. You are to advise Mr & Mrs Brown using the techniques, in the proper flow, a good lawyer would employ from the moment your clients walk into your law office