Why would you want to become ICAEW if you are already ACCA. It makes no sense! I am a tax lecturer at BPP in London and train students for the ACCA and ICAEW exams. The ACCA exams are much much harder than the ICAEW exams. Both are chartered qualifications, both have the same remuneration levels, both are able to carry out the same work. The main differences are that the ACCA is more internationally recognised and the ACCA syllabus is more demanding.