For those with an interest - the latest issue of the above, (issue 231), has an article relating to Departmental Multiple Units.
Southern Region EMUs
Eastern Region EMU Stock
London Midland Region EMUs
Scottish Region EMUs
Former BR EMU Stock
Traction Development Stock
Southern Region DEMU Vehicles
First Generation DMMUs
Track Recording Unit 950001
Track Recording Coach 'Elliott'
That is going to be a "must buy" for me :D