Yes, it's possible for UK business visitors to recover VAT incurred on business expenses. This is mentioned in Article 67 of the Executive Regulations and FTA has also issued a separate user guide on this subject. You should be able to reclaim VAT provided your business does not have any registered company, branch or office in UAE and is not legally required to be registered in UAE for tax. At the same time, your business has to be registered in UK and UK has to have a similar scheme providing VAT refunds to UAE business visitors, which it does.The amount of VAT you are reclaiming has to be equal to or more than AED 2,000 a single year, else you would not be entitled to VAT refund. The VAT that you can reclaim must be directly related to your business and cannot be for entertaining, which is specifically excluded from all input VAT recovery.