If you can call yourself an Engineer if you feel like it, then it's not a protected title. "Doctor", is for instance a protected title. You can not advertise y

If you can call yourself an Engineer if you feel like it, then it's not a protected title. "Doctor", is for instance a protected title. You can not advertise yourself or your services as a doctor unless you're a qualified and practicing medical professional. I believe some kinds of legal practices are the same.