SDA to ESA update

Hi,
just to let the board know that, having been successfully transferred from SDA to ESA(CB) SG, my sister has received a tax code change notification at about seven weeks after the first ESA payment, despite my not getting around to telling HMRC about the change to her circumstances yet.
Pretty efficient, huh?
Cheers,

Sorry, that should have read - seven weeks since going onto ESA, and about five weeks since the first payment. Apologies.
wc.