Yea most of them are very elusive. We have sites for HB, MH, TP, WR, WW, and Hawfinch here but its only 1 or 2 locations. Serin, Goosander and Jack Snipe are rare winter visitors although the Goosander is the one that really bugs me as there was one around in Norfolk all winter but I never quite caught up with it! This year.
Puffins you will get off the coast but far less regularly than in the North, same goes for Long-Tailed Skua in the North west and the rarer shearwaters and petrels!
In comparison we have numerous sights for Nightingale (if you can find them!) and have Quails everywhere, but seeing is the tough part.
The other birds you have listed are all rare in most counties though I feel or are just rare as a whole! I've only seen Black-necked Grebe, Capercallie, roseate tern, red-necked phalarope and wryneck once! Willow Tit i've had one possible and only a handful of sightings of LSW and Black Tern!
Both having lists around the 270 mark we are reaching that stage where we are relying on birds being blown off course or trips to other parts of the country to increase it!
. I'm not very good on the seabird front either - I still need Long-tailed Skua, any species of Storm Petrel and Balearic Shearwater and Little Auk. I can see why they are mostly seabirds that you haven't seen, you're in a landlocked county! Good luck if you go for the Western Bonelli's tomorrow.
