Bob's your Uncle is often used to describe something that is resolved in your favour without much effort such as 'Just send the form in and Bob's your uncle'.

The phrase was in regular use in England from the 1890's and comes from the promotion in 1886 of Arthur Balfour to Secretary of State for Ireland. Balfour was a surprise choice for the position and few regarded him as qualified for the post.

But when it became known he was the nephew of British Prime Minister Robert Gascoyne-Cecil, 3rd Marquis of Salisbury, the joke circulated that if Robert was your uncle, then anything was possible.