It is a tough one because Filipino`s often sleep in the same room as their kids..
Our kids were in with us until 7 years old!!.. It didnt bother me a bit as they were out for the count as soon as their heads hit the pillow.. The Mrs wouldn't have it any other way..
When my eldest was born the nurse had to remove the child from my wife`s bed about 6 times every night and put him back in the cot.. She didn't complain to the nurse..Just put him back in the bed with her when the nurse left... Mother knows best!

I kind of agree with breaking the habit if thats what you both want but if your son has only been in the UK for 3 weeks then thats not very long is it?
It will work its self out..Don't worry.