Yes, I would imagine it would be very unlikely that you would get them into the uk without customs charging you an import tax. The odd coin you could cenceal about your person, but 100+ with cases etc will be much harder. The loose sovereigns should of course be kept in separate packages right now, or they bash each other and that won't do them any good at all. For the worn or later sovereigns you should at least get bullion value for them, and if I had that kind of money spare at the moment, i'd be glad to purchase them. Some of the better grade sovereigns will be worth more, but personally if you're looking for a quick sale you can't go far wrong selling them at bullion value (or a few % less). The effort involved in sorting out the better ones and selling them separately would be a drag, and many are likely to just be worth a little over bullion. Shield back Victorian coins are generally bought at more than bullion. I don't like turning sellers away, but if I were you, I'd remove the shield back coins, and high grade victorian and accept melt price for the rest where you are now...Unless they are all of a very very high standard you probably won't be doing yourself out of much. The more modern stuff isn't really my cup of tea. It's difficult to sell, and generally on the open market they tend to sell at around 70% of book (although some are more sought after). I'd offer bullion plus a certain percentage, but certainly would fall over myself for it. I do have a regular buyer for modern proof/gold issues though.