I think they are either some type of Mammilaria(sorry is spelled wrong) or this Mammolobivia ive recently heard of.

It's a Mammillaria. There is no Mammolobivia. It's likely a bee will visit - if not, take some pollen from one plant (with a paint brush) and brush it into another flower.

Thank you! I'll go and do some further research with that info you've given me, it's been really useful :)

Most Mammillaria types are self sterile, so you cannot produce seeds with only one plant.

Thanks for letting me know. Do you think they could be mammilaria laurii subsp. dasyacantha very possibly the one on the left being subsp. subducta as the tips of some of the central spikes are red??