Hi Trevor Harris,
I agree with Radu - give it a try without the UV filter.
If you find that the UV filter is the reason, try cleaning the UV filter thoroughly. Grease or moisture can easily cause these types of flares.
I'm not familiar with "citywide" as a brand of UV filters, suggesting that it's discount brand. Poorly constructed UV filters can introduce all sorts of flares in and of themselves. However, that doesn't mean that UV filters are a bad idea - they do protect the front elements of the glass.
So, as an alternative - assuming you confirm that it's the UV filter that is causing it - you owe yourself to try a better UV filter from..say Hoya or Tiffen or B+W. If you can afford it, a thin one.