If i went to london as a tourist and find a job...do i really have to go home or iwait for my working visa in that country?

No you aren't. Whatever site you are reading is wrong and will lead to your deportation and banning. You cannot job search in Canada as a tourist. It says that in the visa application. First thing you will be asked by any employer is what's your SIN number. Don't have it? You'll be reported for attempting to immigrate illegally. Any employer needs an LMO - proof from the government they can hire a foreign worker. Given the backlash in Canada against abuse of the program, no employer will risk government problems by interviewing someone violating Canadian law. You will be issued a letter to leave the country immediately. That letter will be on your record and will screw any chance you have of returning. Canada does not allow tourists to look for work, this is called immigration fraud here and taken very seriously. You will also seriously piss off Canadian employers because you will create hassles for them. You cannot simply stroll into Canada and assume you can remain. What job skills do you have? Do you meet all the immigration requirements? There is a long line of people waiting for work visas ahead of you. You need to get in line and apply from outside of Canada. Chances are high, you and your girlfriend will simply be turned away at the border and put on a plane for home. Your plans are ILLEGAL. Without a valid work visa, you cannot look for work while in the country.

If you arrive at customs trying to enter as a tourist, and they think you'll be looking for work, they will deport you. If you're already in the country, you must leave before applying for a work visa, unless you're already in the UK on some semi-permanent basis like a student visa.

You cannot get a work visa if you entered the UK as a tourist. You can only get a work permit issued in your country of legal residence. So even if somehow you were able to find a job, you would still need to return home and it would take months for the employer to first file for a Certificate of Sponsorship to be able to legally offer you the job. They would need to prove to the govervment that they advertised the position for a minimum of 4 weeks and not one single qualified EU citizen applied for the position. They are required to submit the CVs of all applicants if requested as proof that you are the only qualified person and not a single qualified EU citizen applied after 4 weeks of posting the job

You cannot come in on a tourist visa and then look for a job,and you cannot get a job here. we have 2 million people already living here looking for work, so work in your own country.

It's illegal to work or look for work as a tourist.

You can't get a work visa in country; you'd have to return home and apply. Your sponsoring employer would have to meet the requirements to sponsor your visa.

Any employer employing someone with NO work visa will be fined 10 thousand pounds and prosecuted in the UK.

You have No chance of getting a job here.

If you don't have a work visa, you can't get a job in London or anywhere else in the UK

If you come as a visitor you go home when your visit is over, as dictated by your visitors visa

or return flight ticket.

If you don't have a return flight, you won't get into the UK

Can NOT get a job on a TOURIST visa...

Anybody who employed you would be breaking the law and so would you

You leave the country