List of good drinks deals at Farm Foods just now:
2 x Mountain Dew Energy drinks (cans) - £1
500ml cans of Relentless - £1
500ml bottles of Pepsi, Diet Pepsi, Pepsi Max, 7up, Tango - 39p
330ml cans of the above - 4 for £1
1 Litre bottles of Pepsi, etc - £1
Those are the ones I remember, there are probably others!