We do combine postage. If you use [ADD TO BASKET] button located right under [BUY IT NOW] you will be able to see how the postage price is changing when you add the items even before you actually pay. You can add the items from different listings and pay for all of them after in one go.
For every additional item we charge only £0.50 postage fee but only if parcel goes out of UK due to higher Royal Mail postage charges. Also you can enjoy FREE 1ST class delivery if your order is £15 or more. (UK only)