We knew shipping boxes would be expensive, but we hadn't realised just how much each box would cost! It looks like shipping heavier boxes would cost less via a moving company than using Parcelforce, and although the initial charges sound ridiculously high, it makes more sense the more boxes you ship. We'll have to work out just how many we want to ship before asking for quotations, and must bear in mind that some shipping companies charge a fee for packing your goods, even if you have packed them yourself (sneaky!). Oh, if only we worked for a company; they'd pay our relocation costs.
Of course, these are just the rates for small crates/consignments. Goodness knows how much shipping furniture and other household goods would be!