Yes. please be sure to mark the package clearly on the customs form & Outside of the package "EXCHANGES" or "REFUND" with no value before sending it back.
Also please highlight this to the courier you are using so they correctly fill out the paperwork on your behalf to make sure you avoid any charges and problems with UK customs.
We will not be held responsible for lost or damaged goods sent by you, please ensure that you use a reputable courier.
We want the returned package to reach our given returns address and do not offer to pay any customs charges on your behalf if your parcel is stopped at the UK border because the procedure was not followed correctly.