This paper reports on a case study of the London Education Authority of Barking and Dagenham's borrowing of Swiss educational practices, and the implementation and internalisation of those foreign practices in the teaching of mathematics in primary schools. The study employs analytical frameworks that might be used by policy makers or researchers looking at "borrowing" educational practices and policies from elsewhere to use at home. The significance of context (e.g. social, economic, political and demographic) is highlighted, both in the process of educational borrowing and in the implementation of these ideas to improve education at home. In conclusion, the paper reflects upon "best practices" and strategies that might serve as lessons to others. (Contains 3 figures and 10 notes.)