Hi Jill,
Over the last few of weeks, the information that we have for the wider Buer family has been expanded, such that we now have quite a good picture of the London Buers. My sister who lives close the the archives has been able to check out birth/marriage/death records as well as apprentice records too.
To find where the respective Buers relate, we would need a name and date of birth of an individual Buer in your tree. The Buers who you mention to be butchers, sound like my direct branch. The problem with the Buers is that they all seem to have favoured the names "William" or "Charles" making identification a nightmare.
I still need to undate the ancestry tree with all the Buer information, and would be happy to hear anything that you might be able to offer. Depending upon where your Buers fit into the tree, we may be able to offer some information that you may not have.
Regards
Max