I'm sure there is a list of all the operating companies and the standard that they require on the OPCs website.
Even if the company you sat assessments for uses Standard, you could well have met the Enhanced score for another TOC.
Keep in mind that not all companies use the same level of enhanced, so enhanced for one company may be lower/higher the enhanced mark required by another.
Also worth mentioning for anybody reading, that if you fail the test for an enhanced TOC you may well have still met the standard mark. This would however mean you only have one chance left to meet the enhanced level.
Hope this helps!