EIFFS
You are totaly correct in that the Per deims are now to get tax relief at source but this should not affect the total remuneration package as this would have been claimed back from the HMRC when you put in your tax return.
Any one asking about take home pay should be very careful, this depends on an individuals tax status in the U.K. and will never be accurate except for that individual, best look at the pre tax remuneration and then your own tax liability if you want an accurate number.