After removing the rear seat, then plastic cover, then eventually the plastic screw down lid (hammer and blunt screwdriver) then removing the pump from out of the tank to find that yes, there is a filter but NOT the filter I had brought.
Word of warning once you try and replace the pump into the tank be aware that this will cause the petrol to come out the top of the tank!!!!!
May be better to not try this operation until you have no more than half a tank of fuel (not a full tank as I found out).
I will have attempt number 2 next weekend by seeing if it is located behind drivers wheel!!!
Petrol filled 04 clio man!!!, March 2014