I think the answer is no. Here is the applicable rule section from the Visit Europe rules.
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70N . 2. TRAVEL ON THE INTERCONTINENTAL SEGMENT INTO
71N . EUROPE AND THE INTERCONTINENTAL SEGMENT FROM
72N . EUROPE MUST BE OPERATED AND MARKETED BY AN
73N . ONEWORLD CARRIER.
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You could take BA NRT-LHR-AMS but you don't specify how you are getting out of Europe.
Also, discount carrier fares in Europe in many cases are cheaper than the Visit Europe fares.