Check out the EasyExpat guide to London. There is a section on adverts and searching for work.

Some thing s to keep in mind:
The best language schools often require applicants to have TEFL course certificates and a college degree. You must have adequate visa clearance and registration Most schools will supply you the intent to employ so you can secure a visa.

TESOL(also known as TEFL) is the acronym for Teaching English to Speakers of Other Languages. A TESOL certificate is the most common qualification required to teach English abroad. There are a wide variety of TESOL courses available, ranging from 4-week intensive, classroom based TESOL courses with TEFL International, to TESOL courses studied online. It is even possible to combine a period of online study with a shorter classroom based course. In addition to standard TESOL certificate courses there are also more specialized courses such as courses for teaching business English, or teaching English to young learners. There is also the more advanced TESOL diploma course.

The easiest way to get started teaching English is to find a school. The best situations are companies that pay adequately and aid in getting visa paperwork completed. These positions may be difficult to come by and there is fierce competition for the largest.

Applicants usually submit their resume and application, and if the school approves, the applicant will be asked for an interview. The interview may consist of a sample lesson or a grammar test. Some schools will throw teachers right in for a 90 minute class where the school observes and either offers the job, or does not.

Private lessons in technical and business English at private companies is the most lucrative strain of teaching. These jobs are hard to come by without experience. Teachers must provide valid permits for these positions.

Best of luck!