The couple fell in love on the set of Underworld in Hungary in 2003, and Beckinsale couldn't believe Wiseman's limited experience of the world.
And the 32-year-old admits she's been busy introducing Wiseman to famous English brands such as Marmite (yeast extract spread) and Cadbury's Dairy Milk chocolate bars.
She says, "He hated Marmite, but I've managed to get him on HP sauce. I find that if you try Americans hard enough on Dairy Milk they will admit it's better than their stuff - which smells like sick and goes white.
"There's something really great about growing up European. In the US, they've got everything on their doorstep, so they don't need to leave their burger and chips till they're 28. We go off to France and say, 'Wow, they wee in a hole in the ground.'"