Slitherine

If I charge a LH unit from the front which has a heavier cav unit behind, can the heavier cav unit intercept and move forward on the grounds that when the LH evade my charge will then go within 4 MU of the heavier cav?

If you look at the sequence of events you'll see that intercept moves are made before evade moves.
So no, you can't intercept in this instance.

The answer could be more difficult if you consider a charge declaration, then the flee, then the move of the charger which reach, during his move the Interception Zone of a BG.

What about this interception if at the time of interception, no screen of LH is there as it fleed before ?

Jerome

Since a broken BG moves before the intercept move, I see no reason why an intercept cannot be declared in tihs situation.