Too many items to identify for you. You should be able to find details of identity and age for the British pieces on my web site: www.silvermakersmarks.co.uk. When you have done that come back here with any unidentified pieces and keep the queries down to one or two items per post please.
For values check out Ebay’s sold listings. You should find similar items which will give a good idea of what people are prepared to pay.