I do want to beileve (yes, I love X-Files;-). But...
For many, many years I have carried a camera with me with the hope I could take some pictures of "something strange", be it in the sky or on land, or whatever.
Unfortunately, I did not see anything tht could be considered as strange, despite the fact I did travel quite a lot.
When I heard about the book from Luis Elizondo, "Imminent" actually through slashdot, I had to buy it. The advertising was really good.
Unfortunately, the book is by far not convincing for the existence of anything "alien". It contains even few misleading information like the "suggestion" that it is possible to travel faster than light (using quantum physics to justify).
This book from Mr Elizondo looks to me more like a way to make money for him, taking benefit of his professional history, and perhaps because of possible internal problems with his management, that can help to try to impress people.
This article refers also to a movie "The age of disclosure", again involving Mr. Elizondo. So probably nothing new there neither.
So the former analyst of Bank of England should not provide any recommendation based on the Mr. Elizondo's "information", unless of course this analyst belongs to Mr. Elizondo's private club, aiming at getting money from people.
That being said, I still want to believe. I am just waiting to get serious evidence, not just partly hidden information from supposed secret documents.