"Unsolicited Advice".
Let him learn to live in the "UK" for a while.You didn't bring him there to be "Just Like Here",only cold and wet.
You could loose him into the "Dominican Expat Community" there.
This is the time for you and he to "BOND".
Let him assimilate into your culture.
Let him get to know your family and friends first,only then,if HE feels the need,look for some "Roots",seek out the "Dominican Community",
At Your Own Risk!
Cris Colon