I have been interviewed in a day which includes 3 technical rounds, 1 stakeholder and HR discussion.

I have submitted all the docs to recruitment consultancy including employment form, recruitment consultant said me that I will get a call directly from Barclays anytime after one week, now its about a month but still no call or email from Barclays. Anyone knows how many days generally Barclays take to release the offer?

Interview was on design, asked me to design a part of system including UML, code etc. It took around 2.5 hrs. It was a very healthy discussion on designing concepts.