Delete some columns from a cell array depending on an array SP

Given the cell array

V={{[1,1,1,1;25,45,70,90],[2,2,2,2;78,112,146,180],[3,3,3,3;93,127,161,195],[4,4;70,100],[],[6;85],[],[],[9,9;85,110]},{[],[2,2,2,2;73,107,141,175],[3,3,3,3;83,117,151,185],[4,4,4,4;65,85,105,125],[],[6;85],[],[],[9,9,9;80,105,130]}};

and the array

SP= [1 2 3 4 6 9];

I want to remove from the cells V the column that are not in SP.so column 5 7 8. obtaining

V={{[1,1,1,1;25,45,70,90],[2,2,2,2;78,112,146,180],[3,3,3,3;93,127,161,195],[4,4;70,100],[6;85],[9,9;85,110]},{[],[2,2,2,2;73,107,141,175],[3,3,3,3;83,117,151,185],[4,4,4,4;65,85,105,125],[6;85],[9,9,9;80,105,130]}};

May someone help me?

[luca]

B = cellfun(@(x) x(:,[SP]),A,'uni',0);

It's fast way?

[Guillaume]

Yes.

The [] around SP are pointless though.

[luca]

Thanks!