As Scalloway says canteen drinks facilities are OK.
To me TheCyclingProgrammer has given you the best answer yet.
If you are a company the machine has to be wholly and exclusively used for business purposes and make sure it is invoiced to the company. So TCP has reinforced this business function by putting physical separation on the coffee machine. VAT would be fully reclaimable.
If you are self employed, then you will be able to claim the business portion, if it was used for both private and business purposes. You would need to disallow the personal portion of the VAT. If you are a real caffeine addict then this will still work in your favour.
However, there may also be an argument that you wouldn't have purchased the machine if you didn't have the business, indicating it is exclusively business. This may apply if you argue that you personally survived by making coffee with a cafetierre for years and only got the machine to increase your working hours, by reducing your "kettle boiling" lost time.
NB Wrapping it and putting it under the Christmas tree is not a good indicator of business exclusivity...