@Kestrel
If your FAA license was issued based on your UK license and for whatever reason your UK license number has changed, then you can pitch up at the CAA facility and submit an application for re-issuing your FAA license.
Follow the process as depicted in my narrative.
@md 600 driver
It is nice to be funny.
NO, i'm neither a refugee nor an escapee.
@Zulu Alpha
The alternative is to fly across the pond to the US and get the license reissued at an FSDO.
WP