Have your qualifications “translated” into UK equivalents by applying to UK NARIC and get police checks/certificates to demonstrate your good conduct. Indian teaching certificates are not recognised in the UK, so you will be viewed as an unqualified teacher. If you are planning on teaching post 16 in an FE college this may not be a problem, since most FE colleges will be prepared to put you through a teaching qualification. The bigger challenge will be finding work. In FE you may have to start on sessional contracts and you may not be able to start work until the new academic year starts in September. The other challenge is your subject – there is no shortage of Biological Sciences teachers in the UK, so you will be competing against teachers who are viewed as qualified. If you want to teach in a school instead of FE this will be more of a challenge to find work. Only independent schools and academies are allowed to hire unqualified teachers, which will limit the work opportunities available to you. Despite this freedom, most hire qualified teachers. Maintained schools can hire unqualified teachers if no qualified teacher applies for the position, however, this is unlikely to be the case for a biology post. Since you have been teaching post 16 in a college, if you have aspirations to teach in a school in the UK, I would read up on behaviour management strategies as you are likely to be asked about this in interviews. Be aware too that if you want to teach in a school, you are most likely to be employed as a general science teacher to GCSE level only (A level teaching is normally reserved for more experienced and proven teachers). You should therefore brush up on your Physics and Chemistry as you will be expected to teach all three sciences. Read through the GCSE specifications so that you are able to convince an interviewer that you will be able to hit the ground running.