What makes me a First Time Buyer
From a mortgage lender's perspective, if you currently don’t own a property, or if you're on a joint application and both of you don’t currently own a property, most lenders will recognise you as a first-time buyer.
From a stamp duty perspective, if you have never owned a property, or if you’re on a joint application and both you have never owned a property, then you will be classed as a first-time buyer.
On 22 November 2017, it was announced that first-time buyers who purchase a property for £300,000 or less would have no stamp duty to pay. In London, a first-time buyer purchasing a property for up to £500,000 would have no stamp duty to pay on the first £300,000 - saving them up to £5,000.