Not exceeding £100,Nil,
Exceeding £100 but not exceeding £160,3,
Exceeding £160 but not exceeding £220,5,
Exceeding £220 but not exceeding £270,7,
Exceeding £270 but not exceeding £375,11,
Exceeding £375 but not exceeding £520,15,
Exceeding £520,20,

Not exceeding £430,Nil,
Exceeding £430 but not exceeding £690,3,
Exceeding £690 but not exceeding £950,5,
Exceeding £950 but not exceeding £1,160,7,
Exceeding £1,160 but not exceeding £1,615,11,
Exceeding £1,615 but not exceeding £2,240,15,
Exceeding £2,240,20,