I'm not familiar with the Rega, but definitely remove all parts that are easy to remove. Including the Platter, Tonearm (remove the weight from the arm too), dust cover. If there is a provision for a transport screw (there may not be) secure it.
It is possible to ship it with the tonearm installed, but if you do this, it's imperative that the weight be removed, the arm be locked in it's cradle, and that there be some protection to prevent the arm from bearing any load or shock. If it's easy to remove, I would do so. When packing the arm, extra care should be taken not to break the lift tab from the headshell, or damage the cuing lever. The arm, dust cover, and table, mus, must, must be separately boxed. These 3 boxes can then be packed in one larger box with the table on the bottom.
Here's a link to The Turntable Factory packing instructions which are a very good guide.
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It is possible to ship it with the tonearm installed, but if you do this, it's imperative that the weight be removed, the arm be locked in it's cradle, and that there be some protection to prevent the arm from bearing any load or shock. If it's easy to remove, I would do so. When packing the arm, extra care should be taken not to break the lift tab from the headshell, or damage the cuing lever. The arm, dust cover, and table, mus, must, must be separately boxed. These 3 boxes can then be packed in one larger box with the table on the bottom.
Here's a link to The Turntable Factory packing instructions which are a very good guide.
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