Pollen Filter on RHD

I probably sound like an idiot asking this as there are quite a few threads about this.

I have just tried to locate a pollen filter on a right hand drive R171. I have removed the panel on both the passenger and drivers side, but I can't seem to find anything under there that contains a filter.

There is some moulded white plastic under the passenger glove box but no sign of any clips or anything.

Is there any chance it may be in the engine bay?