Question 931810
Let FV = Future Value
    PV = Present Value
     R = Interest Rate 
     T = Number of Years

FV = PV (1+r)^t
FV = 400 (1+.023)^5
FV = 400 (1.023)^5
FV = 400 (1.120413076)
FV = 448.17

It would be worth £448.17 in 5 years