Well I’ll give it a stab.
According to the manual you have to ring the helpline and ask all sorts of stuff but I’m not convinced. In every case I’ve seen the “pay until” date on the award letter is the same as the date that the final installment of the old amount is payable. Therefore:
1st period:
43.16 (one off) + (42.86 X 24wks) = £1071.80
6/4/03 – 24/9/03 = 172 days
£1071.80 / 172 = £6.2314
£6.2314 X 7 = £43.62 per week
2nd period:
25/9/03 – 5/4/04 = 194 days
£1934.45 (total annual award) – £1071.80 = £862.65
£862.65 / 194 = £4.4466
£4.4466 X 7 = £31.13 per week
In HB/CTB you should take £43.62 p/w CTC into account from 7th Apr 03 and £31.13 p/w from 6th October 03 (because this is the monday after the date of the 1st revised installment that will be paid on 1st oct)