On the assumption that you're BA Gold (as the screenshot and your FT profile suggest):
On Saturday, there's at least 9 V class seats on every LHR-AMS flight. As you probably already know, you will get these for an award seat as a BA Gold, even if X class seats are unavailable.
On Sunday, for AMS-LHR there's V9 on BA423 (0800) and BA429 (1005), and V8 on BA431 (1135). There's then V9 on BA443 (2125) and BA433 (2215). Again, you will get these even if there are no X class seats.