(listening) British police sent intelligence to understand to identify...

[lagoo]

link https://vocaroo.com/delete/s1PbprDOlpk3/995e1a98d93f2069

British police sent intelligence to understand to identify the 2 individuals some time ago, and it's thought may know their true names rather than just the identities on the valid Russian passports they used to enter the country.

I think the underlined parts must be wrong, though it sounds like what I have written down to my ears.

 

[jutfrank]

British police and intelligence are understood to have identified ...

The next underlined part you have correct, but it may help you to see commas:

and, it is thought, may know their true names ...