Don't want to hijack this thread, but in a similar vein...
I am American married to a Brit, living in the UK. I'll be getting my UK citizenship next month.
Would traveling to Cuba on holiday with my husband - using my British passport - be okay?
UPDATED TO ADD: Sorry, didn't read through to page 2 of this thread, and just read JDiver's note above - sounds like it would be okay for me to travel to Cuba using my UK citizenship.