Heathrow was no problem. Stamped at customs and proceeded to the get a refund on my credit card. This was in 2010.
This year in Italy, I got mine refunded anywhere I found Global Blue (twice in Florence and once in Venice) although we were flying out of venice. At the Venice airport, I got the papers stamped by customs BEFORE security and dropped off the papers at the post box located at the Global Blue kiosk inside the terminal.
I'm glad I did my refunds in the city instead of relying on the airport as the check-in for KLM was opened only 45 mins prior to boarding and we had just enough time to drop off the papers before proceeding to the Gate. There was a long line at Global Blue and only one person servicing at that time.
This year in Italy, I got mine refunded anywhere I found Global Blue (twice in Florence and once in Venice) although we were flying out of venice. At the Venice airport, I got the papers stamped by customs BEFORE security and dropped off the papers at the post box located at the Global Blue kiosk inside the terminal.
I'm glad I did my refunds in the city instead of relying on the airport as the check-in for KLM was opened only 45 mins prior to boarding and we had just enough time to drop off the papers before proceeding to the Gate. There was a long line at Global Blue and only one person servicing at that time.