>According to Halacha, regarding a baby who is fit and well and Yom
>Kippur is Yom Hashmini (the eighth day), then the Bris is to be done on that
>A few years ago when I practised as a Mohel in London, I had such a case
>and was instructed by Dayan Chanoch Ehrentreu, the Av Bet Din of the
>London Bet Din, NOT to perform the Brit on Yom Kippur. I do not know
>what his reason was, he simply said that we don't do it here in London.
>I did not discuss the matter with him at the time, but perhaps the Dayan
>was concerned about some of the matters mentioned below.
>There are various other important considerations that must also be taken
>into account when arranging a Brit on Shabbat or Yom Tov.
>In many cases it will be quite certain that there will be a considerable
>amount of Chillul Shabbat or Chillul Yom Tov (breaking the rules of
>Shabbat or Yom Tov) by, for example, the non-religious members of the
>family travelling by car or otherwise, to be present at the joyous
>occasion. Or by people arriving, carrying gifts for the child.
>If the Brit is to be carried out in Shul, as it probably would be on Yom
>Kippur, there's the obvious problem of getting the baby there and back
>home. He can't be wheeled in a pram, or driven in a car, by a Jew.
>Although it's *very* important not to delay a Brit unless there's good
>reason for it (and there are too many Mohelim who seem to perform Britot
>only ever on Sundays!), a Mohel must be aware of all the implications of
>performing one on a Holy Day.
>There are some views that the Mitzvah of holding the Brit on Yom
>Hashmini overrides all other considerations and others that one must
>take into account all the ramifications of doing it on Shabbat or Yom
>Tov and if it is known for sure that there will be much desecration of
>the holiness of the day, it is better to postpone the Brit for the
All of the considerations you describe would apply equally and by
kal vachomer to a bris on Shabbos. Does the Dayan permit brisos to be
performed on Shabbos in London?