Direct contact or agency

[moosehead]

I've seen a job advertised on an agency site, have worked out the employer and checked their own website which mentions nothing about careers or the vacancy.

I'm pretty sure the agency would dismiss me as a suitable candidate as my CV and previous experience don't really match the position, however, I am confident that I can do the job.

Would it be seen as 'bad practice' to contact the company directly? At the moment I can only find the position advertised at just this agency so I'm guessing the company have put them in the frame to vet out the 'unsuitables' so would going direct be an issue?