Hello Gill,
with the best will in the world it is not possible for any forum member to accurately diagnose the noise you report. simply because we can't hear it.
At best the members could only guess, and they might be wrong or right. the only way you will find out for sure is to have a knowlegable person actually listen and test it in some way.
With an issue like a wheel bearing or other important transmission matters, safety must come first, and I strongly recommend you have a garage investigate.