I have been through this process...hmm or rather failed to get through it.

In order to transfer your pension the pension scheme you are transferring to has to be a QROPS (Qualified registered overseas pension scheme) or something like that.

My company pension is with BCV. Which unfortunatly are not a QROPS recognised scheme. If you look at the Customs and revenues page for the UK you can find out which ones are in Switzerland the list is not very big unfortunatly. My UK pension scheme said I wouldnt be taxed but it was never clear if this was compeltely true or not, however in my case the amount of money in the pension was only around the 10000 pound area.

Someone since has suggested to me that it maybe possile to open a pension scheme with a QROPS registered provider. Transfer the money into ti and then transfer it into my company one as apparently this is fairly easy to do when it is in the country.