>>>. . . . Romanised, Vikingised, Normanised.
All of which were invasions that we did not encourage or support.
Much of the more recent "invasions" have been at our encouragement and support (or due to a total lack of our various governments doing enough to stop it).
We now have areas of some cities that are almost 100% immigrant / non white, and many inner city school where there is not one "white British" child.
Some cities are approaching over 50% immigrant for the total city population (Birmingham, Leicester etc)