Hi AdeleW398,
As your main job will use all your tax free personal allowances (£12,570)
The 2nd part time job will be taxed on the full amount at basic rate tax (BR)
If you live outside of Scotland the tax band will be 20%.
If you live in Scotlance the tax band will be 21%.
You can find out more here:
Tax codes
The National Insurance rates can be found here:
National Insurance rates and categories
Thank you.