Colgate 360

jimbo6977

Does anyone know where I can get replacement heads for one of these?

https://groceries.morrisons.com/products/colgate-360-floss-tip-battery-powered-toothbrush-2-heads-448995011

I've only seen one Amazon Marketplace seller offering them for more than the price of buying the whole toothbrush again. 

Apollonia

From the information section of your link:

Replaceable Head and Batteries included. Further Replacement Heads cannot be purchased.

So you do have to buy the whole toothbrush again - seems very wasteful to me. 

Toothsmith

It's not the greatest brush either. The heads are a bit big - and no brush is good at interdental cleaning - despite what they say. Brush wise, a decent Oral B, bought on a half-price offer for £25-30 (Which they're normally always on in one outlet or another) is as good a toothbrush as you can get. And then spend time faffing a bit with some sort of decent interdental aid like Tepes or Clean Betweens.