Smiless,
When you say you scored 2 out of 25, do you mean you made 2 errors or only had two 2 correct?
If the latter then that is most definitely a failure, however, if the former then we need to talk. Drop me a PM and we'll take it from there.
I have been informed this weekend of a person who passed Ishihara for a Class 2 medical then went to a local optician for a full eye test to EASA standards prior to the Class 1 medical at Gatwick and passed that, including the Ishihara test......yet, amazingly, s/he managed to fail Ishihara at Gatwick and was charged a further £ 125 for the privilege of taking the CAD Test, which was passed.
Personally, I am very suspicious as to what is being allegedly perpetrated here.