Skoda Fabia 5th gear rattle

Morning, I'm new to the forums so apologies if this had already been posted.

I have owned my Fabia Estate (2010) Cr105 for about 2 months. I have recently noticed when I'm in 5th gear (more so at lower rpm and 5th gear only) there appears to be a metalic-type rattle coming from the front somewhere. More noticeable when the passengers side window is down. Any ideas what this could be? Seems to be there when you put load on the engine.

Two recent servicing trips to skoda and nothing was mentioned.

Many thanks in advance, Ian