e97e341c_ting_business___Small_Business__Advantages
[0] VAT registration [Disadvantages] If you purchase the entity and take over its VAT registration, you may find that there are irregularities or liabilities associated with the entity’s VAT account that the seller did not disclose to you. [Advantages] 
If you purchase a limited company that operates the business, you will likely take over the existing VAT number of the entity. If, however, you simply purchase the assets of the business (not the entity) then you will need to register the business for VAT.
Advantages and disadvantages of buying an existing business - Small Business
Advantages