My first question would be why either of these companies would choose an owl as a mascot when owls are known for good eyesight or wisdom, but not auditory abilities (I suppose this is my viewpoint). With that said, I have personal experience with trademark law in the US (not the UK), and I don't think they have a leg to stand on if US and UK law is the same with respect to trademarks. For example, in the US, one must…
But, that's probably a bit off topic - our name and the mentioned company's name has the word 'owl' in common, in our case alongside the word 'super' in their case alongside other word(s) so I am investigating how much, if at all, there are any breach of trademark grounds here.