How can a Euro5 diesel van be ULEZ compliant?

I'm considering buying a 2016 Renault Trafic S127 Energy dCi panel van (66 Plate) and have checked online with Transport for London's ULEZ Checker and it seems to be compliant. The problem is that I understand...

The ULEZ means I will no longer be able to go the 500 metres to my local supermarkets for my elderly mum - are Blue Badge holders exempt from the £12.50 charge?

I drive a 2009 diesel C4 Grand Picasso. I live in a postcode just outside the A406. TFL is proposing to bring in an Ultra Low Emissions Zone next year and it would seem that I will no longer be able to...