Great idea this - cook food in the oven whilst barbecuing above. Seems sensible doesn't it. But there's not many bits of kit on the market that will let you do this.

You build the brick structure from our instructions and we supply the difficult bit. You could probably get away with an uncemented brick structure but it would be much stronger and safer if you include a bit of the old 3:1 ready mix cement.

You should get change out of 120 bricks.