Oh and about the new 2017 specification (for edexcel further maths):
Four papers:
1) Further Pure 1 (Matricies, Vectors, Complex numbers, Proof)
2) Further Pure 2 (Differential Eq., Polar Coordinates, Hyperbolics)
3) Option 1
4) Option 2
Option 1 Papers:
Further Pure 3 (Further calculus, Differential Eq., vectors, numerial methods, inequalities, coordinate systems)
Further Stats 1 (Linear regression, statistical distributions, correlation, hypothesis testing, chi squared)
Further Mechanics 1 (Moments + impulse, collisions, CoM, work + energy, elastics)
Decision 1 (Graphs, Algorithms, CPA, Linear programming)
Option 2 Papers:
Further Pure 4 (Groups, Further matrix, Further calculus, Further complex num, number theory, further sequence/series)
Further Stats 1 (Linear regression, statistical distributions, correlation, hypothesis testing, chi squared)
Further Stats 2 (Probability dist, combination of r.v., estimators, confidence intervals + tests, probability generating functions)
Further Mechanics 1 (Moments + impulse, collisions, CoM, work + energy, elastics)
Further Mechanics 2 (further kinematics/dynamics, circular motion, elastic collisions, statics of rigid bodies)
Decision 1 (Graphs, Algorithms, CPA, Linear programming)
Decision 2 (Transportation, Allocation problems, flows in networks, game theory, recurrence relations)
(source:
https://qualifications.pearson.com/content/dam/pdf/A%20Level/Mathematics/2017/specification-and-sample-assesment/a-level-l3-further-mathematics-specification.pdf )