princess on Family Tree Circles

I am looking for my family on my fathers side of the family they were from gravesend and i believe all moved away but i am not sure where exactly.I believe some may have remained in the UK but after losing their mother and father all my fathers brothers and sisters went their seperate ways.
My father is James Collins and his mother and father were bill(william) and rose i don not know here maiden name.
My father has kept in contact with 4 of his sibblings bill,steve,cath and Mary. I f you have any information please contact me . I dont think my family originated from England and i believe we have connections to the smiths in london.My fathers ancestry is of Romanys.I donot know where our family originate from as i dont have enough information to find out.