The invalidity of any one or more of the words, phrases, sentences, clauses or sections contained in this Offer Letter shall not affect the enforceability of the remaining portions of the Offer Letter or any part thereof, all of which are inserted conditionally on their being valid in law, and, in the event that any one or more of the words, phrases, sentences, clauses or sections contained in the Offer Letter shall be declared invalid, the Offer Letter shall be construed as if such invalid word or words, phrase or phrases, sentence or sentences, clause or clauses, or section or sections had not been inserted.