Thanks Dave, I've just come on to update the post now as I have had an email back from Peter Spencer from the searcher magazine. He agrees with you on the first one and parts of the 2nd and 3rd. He believes 2 is a different class and possibly a rarer variety from class VI or VIII. 3 he believes is a Bury St Edmunds mint.
1: Edward III, post-treaty period, Durham (DVN OLM).
2: Edward I halfpenny. Awkward, as most Edward I halfpennies read EDW R ANGL, etc. but this has a EDWAR ANGL, etc. However, rare varieties of class VI and VIII have this reading.
3: Parts unclear but Edward I class X c-f, Bury St. Edmunds (VILA SCIE DMV NDI).