If you have previously recommended this thread, you should see a tick / check mark on the recommend button. Click the tick to undo the recommendation (the tick may appear to change to a cross as you do this.) If you added a comment with your recommendation, you will need to delete that from your facebook wall separately.
OK, we've been in touch with the folks at moneysupermarket.com who provided us with much of that content, and they say:
"We contacted HMRC for confirmation and they told us that leasing cars and medical insurance can both, as part of salary-sacrifice arrangements, be used to reduce net-adjusted income (and therefore help you retain some or all of your entitlement to child benefit). Hope this helps."
From the research I have been able to do so far, it seems that only pension contributions can be deducted from gross salary to reduce net adjusted income if you're in the mid-range salary area and trying to reduce tax liability if opting to still receive child benefit. The info on the Mumsnet site says about cars and medical insurance which I don't think is correct - can anyone clarify please?