All M&S application processes are on their website!
The best way would be to go the Marks and Spencer website at www.marksandspencer.com/careers.
I aplied for my job online. Lots of questions to answer then once you pass this you get asked in for an interview, you have role play then if they like you they offer you the job
I applied online and found the online application straightforward.
Through the internet it's all done on the computer system