Hi.
For VAT purposes it is important to establish whether the business is established in the UK or whether it is a non established business.
Please see the guidance below:
Non-established-taxable-persons (NETPs) — basic information
In scenario 1 the manufacturer will be selling the goods to the limited company who then will sell the goods to the customer in the UK even if the limited company don't actually see those goods at any time.
This will mean that taxable supplies are being made and so if the limited company are non established then they would need to register immediately and if they are established in the UK then they will consider the 85K threshold before registering.
In scenario 2 the goods are physically in the UK when the goods are delivered to the customer and so the same principlies will apply ie if the company is non established then they will register for VAT straight away and if they are established then they will consider the 85K threshold.