did you get your from the actual baby hawk site?
i ask this cos i heard something about taxs if it comes from over seas but i dont understand it.
In theory all taxable goods coming into the UK are subject to VAT (i.e. everything but childrens clothes and food, pretty much). When you buy things from another country customs will check it as it arrives and decide whether or not VAT needs paying. If it does they will hold your purchase and contact you to ask you to pay the VAT.
My mei tai ordered from the USA arrived with no customs fees though.
I think the note on the BH website is something they have to put up just in case and may not be applicable in every country. It might be that orders below a certain value are exempt. I'm not sure of the details.