goldersgreener:
“1) R’ meir Rosner has made his feelings clear that one may not carry on most the main roads in yerushalayim, including recently the sheaf Chayim road. As such one is limited to the loacal eiruvin, I think many are makpid not to carry on Shmuel hanovi or Bar ilan etc.”
I don’t know why R’ Rosner is cited as if he is the posek achron. People should know that he is machmir in all inyanim of eruvin.
“2) Even the eida hachareidis eiruv excludes kvish one, kvish nine [except for the tunnel to ramat shlomo] etc… the other rads have police barriers in place on Shabbos, as such at least on Shabbos they are very different and possibly this effects their denim even when the barriers are not in place. The same applies to b’nei b’rak, there are barriers by the coca cola bridge on kahaneman and in other places.”
These are all excuses after the fact. Police barriers many times are not halachicly valid mechitzos.
“3) as far as I heard R’ ehrentrau shlit”a said that even with a tzuras hapesach at Spaniards inn he agrees that it is not a rambam eiruv.”
I don’t think that this is true regarding Rav Ehrentrau. In any case, we do not follow the Rambam. Almost all eruvin prior to WWII did not follow the Rambam. Today we seek all chumros regarding eruvin.
“4) R’ Yosef Babad – belzer dayan of Stamford hiil has said that it is unfair to compare townhouses with front and backyards to e”y where people live in 50 or 70 sq mr with a large number of children, many windowless machsanim, and many do not use electricity on Shabbos. as such he has said that the leniencies in place in e”y cannot be used in London.”
This is suspect, as most Belzer daynim are very pro eruv. There are no leniencies in EY, only accepted halacha.
“5) Rabbi Roberts says that r’ shimon eider told him that the a406 and a1 are undoubtedly reshuyois harabbim, and cannot be compared to Israeli roads. he has expressed himself extensively on the subject, and repeatedly said that there are questions of de’oiraysa involved.”
And I have spoken to other rabbanim in London who deny that Rav Eider said any such thing. Rav Eider maintained that there was no issue regarding d’Oraysa in London. In any cased, notwithstanding what Rav Roberts claims there is no difference between Israeli roads and London roads.
The bottom line is that there is no difference between EY and London. These are all excuses to deny the Charedim in London an eruv.