What are interest rates doing?

An informed by will say they know everything they need to know. I want a fixed rate mortgage and that  is it.  But is that actually the right choice? Could variable be a good option?  Rates have been around the 2.6% to3.8%  for some time now.  London's economy is increasing, and have noticed a strong 4th quarter.  Rates should be expected to stay the same for a while longer.