127.000 hits on de "Bob's your uncle" do not strike me as a lot, tell you the truth.
Here in Spain definitley almost completely unknown:
143 de "Bob's your uncle"
The ghits are relevant to your question, "I don't know if the expression is really wide spread in Britain and known all over". Naturally, a British English idiom is unlikely to be well known in non-English languages, but the 128K ghits do help establish that's not rare
in British English, which was what I was replying to. The real point I was making is that rarity can't be ascertained from the data in this thread.
Having worked in market and social policy research for the last 15 years, I have picked up a bit along the way about valid sample sizes, sampling methodology and question structures. So, when my assertion that the expression is
not that uncommon was seemingly challenged on the basis of (a)two Kiwis who said they hadn't heard it, and (b) the fact that only about 3 respondents in this thread admitted familiarity with it, my sublime, exemplary and quite frankly unmatched professionalism, dedication and personal integrity left me with no choice but to dissect the less-than-rigorous data being offered in support of said challenge. Of course, I was sloppy myself because I failed to define the parameters for my assertion, believing them to be understood, which is not good practice in my line of work.
