Hi
We bought almost everything from the UK and shipped over (we used a guy called Allan for our shipping - very reasonable - we can supply details if required).
We have worked out that we have saved around £2,000 (inc shipping) and we have been able to have a good shop around in the UK and get some nice bargains! We looked in depth at all options and we have certainly saved ourself some money. Whatever option you choose, it's stressful!!
We bought our bedding (quilts, covers, pillows etc) and towels etc from Primark. Wilkinson is great for all your kitchen stuff, or The Range if you have one local. Some things are really expensive in Spain and you will have the additional stress of finding the shops (and getting lost), and then the exchange rate is so poor! We found Ikea to be hopeless to be honest, apart from lighting and blinds (but perhaps we were fussy?). Then you've got to hope that they've got what you want in stock when you're there! If you need any other pointers about where to get some bargains, let me know and I will point you in the right directions - just spend the last couple of months going through the same and very happy to help someone if it makes it easier for them!
We came over to Spain in April and intended to get some of the furniture there. We did buy our garden furniture from UK Supplies in Mazzaron and we got our white goods from Real Domestic Appliances. It is not worth getting electrical stuff in UK and shipping (we spoke to consumer direct and to various manufacturers and were told that the guarantees are only valid in country of purchase) so if anything goes wrong you will be stuck (as happened when we came over - we rented someone else's apartment and the DVD player have packed up and the guy had to take back to the UK so we had no player for most of the week!)
Hope this has been of some help. Please PM me if you want any contacts etc.
Regards
Rachel