Working in London for 18 year old immigrant?

I will be 18 next summer and I'm from Lithuania,The Baltics. My father has been working in London for 6 years now and I want to spend the summer there and maybe get a summer job in a cafe or somesorts. My question is: Will I be eligible as an imigrant to get a summer job? If I do, then what kind of a job would you recommend for me?

Thanks guys. Arthur

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I'm sure you'd have to apply for some kind of visa?

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Since Lithuania is in EU theres no need for visa's :)

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