Easy to follow instructions can be found here Tax on shopping and servicesThe process works like this.Get a VAT 407 form from the retailer - they might ask for proof that youu2019re eligible, for example your passport.Show the goods, the completed form and your receipts to customs at the point when you leave the EU (this might not be in the UK).Customs will approve your form if everything is in order. You then take the approved form to get paid.The best place to get the form is from a retailer on the airport when leaving.