Will I be able to enter London from Paris by train without a visa?

philippines , plan visit paris in june. i'd take side trips other countries such italy , monaco through train. want visit london apparently 4 hours away when take train paris. however, unsure if able enter london without visa.

inform me of immigration process, visa procedures , whatnot? need apply visa in uk embassy here in philippines or entering macau hongkong wherein done upon entry country?

please let me know. thank you!

i philippines , plan visit paris in june. i'd take side trips other countries such italy , monaco through train. want visit london apparently 4 hours away when take train paris. however, unsure if able enter london...

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