I grabbed a bottle of Bowmore 12 for £25 in the Tesco promo, which is pretty cheap.
Also I have been stocking up from the Drop Store . com, they have some decent promotions and a wide variety of spirits. Some stuff I’ve had over lockdown v1:
Pogues Irish whiskey is surprisingly good for a gimicky brand, came with a bottle of Buffalo Trace bourbon for £30, so super bargain.
Crabbies 8yo single malt is terrible and best avoided
American Eagle 12yo bourbon, not any better than Buffalo Trace really, better off going for Makers or Woodford
Going off topic i got a 3 pack of rums (Rum Sixty Six) a white rum, a 6yo and a 12yo. The white is good for mixing with cokes or in cocktails, the 6 is great with ginger ale and the 12 is perfectly drinkable on its own.
I heard Waitrose is doing some decent deals ATM too, so might be worth checking that out if you have one near by.