Andrews' swerving 35-yard drive broke the deadlock and the visitors went further ahead when Andrews slotted home Johnson's cross with 11 minutes left.

The scoreline was given a realistic look deep into injury time when Johnson curled home a beauty into the top right corner from the edge of the box.

John Mousinho had an effort cleared off the line but MK Dons were home and dry.

Brentford: Hamer, Starosta, Osborne (Poole 46), Heywood, Basey, Pettigrew, Mousinho, Smith (Shakes 63), O'Connor, Ide (Peters 90), Thorpe.
Subs Not Used: Simon Brown, Connell.

Booked: Mousinho, Pettigrew, O'Connor, Starosta. Milton Keynes Dons: Gueret, Diallo, O'Hanlon, Swailes, Lewington, Stirling, Andrews, Navarro, Dyer (Edds 85), Knight (Johnson 77), Wilbraham (Smart 90).
Subs Not Used: Abbey, Murphy.

Booked: Stirling, Swailes, Andrews.

Goals: Andrews 24, 79, Johnson 90.

Att: 4,476.