Hi there,
Payments went up by approx £140pm, but then income had increased by over £500. The difference is explained by increased costs. I ended up better off post review because pre review I was paying £ 1100 + 50% of the difference between actual income and that stated at the previous review, i.e., 1100 + 250pcm and after review just £1240 because of increased costs, fuel, food, rent etc. Also, on the new i&e form there were expenditure items which weren't on the original which I was able to identify genuine costs against.
All in all it was pretty painless. Evidence to be submitted with the revised i&e were 3 payslips (which I send monthly anyway), p60, utility bills, evidence of rent costs and council tax and that was about it I think. Have never been asked for bank statements or detailed breakdowns of food, petrol etc etc....
Hope this helps, happy to dig out more detail if it would be useful. As I said before, I think the best advice for anyone being reviewed now is to properly assess your costs. They will have increased and may well do so further. IP's are a bright bunch and well aware of this, so should be expecting to see well known cost pressures reflected in your own i&e. The worst scenario is to underestimate and leave yourself short as prices rise. At the end of the day, the worst that can happen is your IP comes back and says they're knocking a bit off this or that, but I think it's unlikely so long as it's an honest account. You certainly shouldn't under any circumstances plan on managing with the same or a lower budget than pre-review to keep creditors happy, they want max return and it's not in their, or your best interest for your situation to become unmanageable and the IVA fail.
Best wishes all,
Martin