Spiced rum is my sprint of choice too, here's a few I'd recommend checking out:
Morgans Spiced: A nice sweet rounded flavour without any major extremes, which is why it tends to be a lot of peoples intro to spiced rum. If you ever see the
Private Reserve get a bottle, it's gorgeous, and the bottle is awesome too
Cockspur Spiced: Ridiculously smooth and subtle flavour, even to the point where it can get lost in too much coke. Nice with not too much mixer or straight. Works surprisingly well for making rum blends too as it tends to smooth out the aftertaste.
Sailor Jerrys: A controversial one, Sailor Jerry's had a major following with it's original recipe but put a few noses out of joint when they changed it. The sailor Jerry's on sale now is still okay, better than lambs spiced, but notably different from the original. New Sailor Jerry's has a bit more going on in the flavours department than Morgans and Kraken but if you want to taste the old recipe - try Old Spiced J
Old Spiced J: Heavy on the sweetness with the strong vanilla flavours but in a very good way. Highly recommend trying this one too. Regarded by many as the go to replacement for Old Jerry's.
Kraken: One of the fewer darker Spiced rums which gives it a a strong flavour behind the spices. If you haven't tried it get yourself to your local whetherspoons as it seems to be nationwide. Drunk it many times on a night out but never bought a bottle for the house so far.
Elements 8: Don't see this one everywhere but it's worth keeping an eye out for. It's a pretty complex flavoured rum with honey, fruits and spices. Don't drown it in a mixer and it's gorgeous.
Red Leg: Not too sweet but lovely and smooth. Tried it randomly in a pub and hunted down a bottle. Definitely worth a taste, think it's relatively new on the scene so may get a bit easier to find soon.
Lambs Spiced: Not a fan of this one, the spices are too weak with the overpowering rum even without a mixer. May be nicer if you're a fan of the straight rums but for me it left me wanting.
Then last but by no means least:
Barcardi Oakheart: This ones my go to spiced rum for 2 reasons. 1 it's easy to find in UK supermarkets and 2 because out of all the rums that are easy to find, I think it's by far the best

It has that extra depth of flavour which makes it distinctively stand out from the others. If you've never tried have a few sips... then wonder what happened to the rest of the bottle!
They should keep you going for a while
