Audio transcription

I am doing a number of interviews on the subject of managing risk. I need to have these directly transcribed into a word document.

The audio files are mp3 with some background interference, but on the whole it is clear. The documents are just for me to edit and read, so I need accuracy, but they will not be published as they stand.

At present I have 3 hours of recorded interview time. But I expect to have a further 4- 6 hours to be done.

Happy to pay by the hour or the job as works best.