Desert-war tanks in France in 1940

What changes if the British tank types later used against Rommel in the desert are available in France in 1940?

German casualties would rise in clashes with Matilda columns and their effective 2-pounder guns, though British operational performance might remain much the same.

Bringing the later desert-war British tank types to France in 1940 would not by itself correct British operational performance. Their presence would make several armoured clashes far more costly for German forces. The Matilda was already a capable battlefield opponent, and its 2-pounder was among the strongest anti-tank guns then available. The scenario therefore changes the casualty balance more clearly than the campaign's outcome.