Solution

38645

First name
Ben
School
Pates
Country
Age
12

There are infinite possibilities to how many times £5 can be created

D= Deposits
W= Withdrawals

4d 1w difference between deposits and withdrawals 3
7d 3w 4
10d 5w 5
13d 7w 6
16d 9w 7
and carrying on.
19d 11w

and on

40d 25w
The number of withdrawals must always be odd because an odd number of 3s is odd
Also any number of deposits (£2) will be even. Odd take away an even equals an odd.