The BoE is sitting on almost one quarter of the Gilts bought as a result of the QE programme (Asset Purchase Scheme). This entitles the BoE to around £7.75bn in interest payments.
The BoE retains this money to cover any losses made as a result of QE. However, should it make a profit then this will go to the Treasury - this helps alleviate the strain on the public sector finances.
Many of you are looking at economic development in your dissertations this year.
This article from the Economist looks at how many of the goals have been achieved and offers a critical view as to the extent they have contributed towards economic growth in the world's poorest economies.