Let's not be delusional. The UK is not a poor country, and 64K is low by US tech standards but it's good by any other measure.
If the UK were a US state, its GDP per capita would rank it roughly on par with or just below Mississippi, making it the poorest state in the union.
It's not a "good" wage in the US. It's exactly median.
Which is fine, someone has to be median, but really underwhelming for the (presumably highly-educated and talented) head of the #1 national historical monument.
The UK is poor and sprinting as fast as it can towards being poorer.