Mock Papers for MRCPI part I, Self-Assessment for MRCP(UK) part I, and Self-Assessment for MRCP Part II books can be found in this Storefront at LuLu.
Together, they form a bank of 1085 questions; e-books and a paperback!
The publication process of "Self-Assessment: Neurology" has almost been finalized by Colen Publishing in Michigan.
"Get Through MRCP part 1:BOFs" can be found in the website of the Royal Society of Medicine Press Ltd. This book (as well as additional MRCP part I books) has been added to ExamDoctor.co.uk ; if you want to assess yourself online, go there. The latter is the online educational arm of the RSM in London.
Good luck with your exams!

Osama SM Amin MD, MRCPI, MRCPS(Glasg), FCCP, FACP