Working as an English Language Teacher without a BA degree

I am currently in my last year of studying for an MA in TESOL (Teaching English to Speakers of Other Languages) ('Foreign Expert' related). At present I hold a Post Graduate Diploma in TESOL, but no BA degree. As it states above, the requirements are stipulated as applicants should have a BA, yet there is mention of flexibility with these requirements.

I have already been offered a contract by the future employer. Does anybody know whether my application could go through? or will it be unsuccessful based on not having a BA? Your thoughts and comments will be much appreciated, Thank you.