Send Clowns is correct in that you will gain a frozen JAA ATPL. The choice is yours with regard to time and cost.
In our experience an Integrated course will take about 14 months, whereas the modular route will be longer. To start a modular route you must have a PPL, and then a total of 150 hrs before starting the CPL skills course. Allow 1 year for the ground exams and then 5 weeks for the CPL (if you go to the USA). CPL in the UK can take longer depending upon the time of year and the weather.
The IR training must be done in the UK and you should allow 3-4 months. The MCC is a quick 2 weeks. Anybody gaining a modular license in under 18 months is doing well.
The bottom line is "will I get a job". The major airlines have assured us that a Modular student will not be discriminated against. If you are good enough, and get satisfy their criteria - of age and background - then you should be in fair competition.
At Oxford you can do the ground study either by distance learning or full time. If you go for the full time course the teaching will be identical to an integrated course. The flying is with the same instructors - so you will have achieved your license, in a longer time frame, but much cheaper.
Just to round off - and no doubt start another major discussion!:
So far this year (Jan to July) the Oxford modular students have achieved a first time pass rate, for individual exams, of 81.4%. The Integrated pass rate is 89.1%. Total exams sat 2,688. These figures are direct from the CAA’s statistics and not massaged by Oxford. Maybe the other schools would like to publish theirs?