He replaced Andrew Johnson , who left at the end of the Summer Term 2006 for the post of Head Master at Stonyhurst College .
The previous Deputy Head Master was Alastair Gloag , from King 's School , Gloucester ( now head at Rishworth School ) .
Alastair Gloag replaced Andrew Johnson , who left at the end of the Summer Term 2006 for the post of Head Master at Stonyhurst College .
The previous Deputy Head Master was Alastair Gloag , from King 's School , Gloucester ( now head at Rishworth School ) .