Good comments by rudestuff, but some points to mention:
- A CPL is definitely NOT "just another PPL test". Please let's stop spreading that myth. The standards are much higher and much more is expected from the candidate in terms not only of flying skills itself but also "professional" handling of the flight and, most importantly, the air law and regulations applicable.
- If you are modular and also working part time, be extremely aware of the timings involved. You must complete all the ATPL exams within 18 months. And then once you've passed all the exams, you have 36 months to complete both the CPL and the IR. It sounds like a lot of time, but believe me, in the UK even having full availability you don't normally get to fly much due to the miserable weather. Then add to that aircraft, instructor, flight school, examiner etc. availabilities and you can easily find yourself in a situation where a course that should have taken 6 months is actually taking 18 months... And on top of that, this bloody Covid thing is making "everything" so much more difficult and time consuming in every level. Don't get comfortable thinking you have 3 years to get your licences, do them as fast as you while you can since when something unexpected happens your plans go out the window.