Ca in uk

As a member of the Institute of Chartered Accountants of India (ICAI), you can join the ICAEW by passing the advanced ACA exams. You can also apply for a practising certificate and gain audit rights in the UK with the Audit Qualification.
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https://www.icaew.com/en/join-us/members-of-other-bodies/icai-members-join-icaew

first thing you need is a work permit. for this you need an employer. finding job from india in uk is 1 out of 1000 chance. either you get an indian/mnc employer who sends you abroad .

second route is you pursue full time course there and then get a work permit. acca/cima platinum  provider is recognized by uk border agency.

icaew qualification increase your chance from 1 out of 1000 to 10 out of 1000. you see the whole thing is work permit. you cannot have a work permit by getting icaew qualification.