Hi Jamies,
Apologies, I’m not sure what you mean by “Just set up my BV in Belgium”
If you’re running a UK business, you can claim the cost of some meals while working as business expenses. If you paid for these personally, then yes, you can reimburse yourself for this cost from the business.
If you’re looking to reclaim VAT from your expenses, you can only do so if you’re registered under a VAT scheme that allows this (usually Standard rate VAT, with a few exceptions for Flat rate). The supplier has to be VAT registered too, and your receipt will show either a breakdown of VAT charged or their VAT number.
Thanks,
Katie