I got CDD at A level and still got invited to a final round interviews at two small consultancies. Obviously if you apply to a massive company who get thousands of applications they have to filter using something, and as many applicants haven’t graduated yet, A levels are the simplest way.
Therefore I only applied to a few small consultancies and put on my CV that my grades were down to personal circumstances – my parents going through their divorce; which was true, although I don’t really believe it affected my studies, I was just lazy.
I got the offer (mainly down to reading The Economist I think) and now I’m happily employed. If you know what you’re applying for, because lots of people don’t, and if you know your subject area well enough, I see no reason why you won’t be able to get a job.
If I had to give one tip from my vast experience, it would be to speak to someone who already does the job. Then there is no way you can shoot yourself in the foot by not knowing the job/firm well enough. And you’ll be able to find out about the culture of that specific office, which is hard to do over the net.