Flight levels & RVSM
Are you flying from the airfield of Abbeville, or the "Beacon"? Are you flying out of the Paris TMA?? Are you flying from further afield??? All these have a bearing on the level you can plan. For instance, the French and UK AIP's stipulate that F260 is the max level out of the Paris TMA. For flights originating from further south, then the level would be F300
MACR