#NoWorries has basically been absorbed into British slang now. I reckon you can blame Neighbours and Home And Away for that.
Also commonplace now is #Shonky and #Crook as in ill.
I have yet to hear average Brits call each other a #Galah or #Hoon but I live in hope.
#sociolinguistics #aussification #aus #hoon #Galah #crook #shonky #NoWorries