Oh far too many to fill the thread with photos (but I will if you like!).
The whole North and West coast of Ireland - Galway Bay, Connemara, Donegal in particular. Wonderful sunsets, hilarious people, great music and excellent beer.
North East England - Newcastle, Durham, Alnwick, the Northumberland coast, Tynemouth, Seaton Sluice. The uni years, and weekends away.
Outer Hebrides - Islay, Jura in particular. Mull, Iona, Kintyre.... February half-terms when I was a kid - knee-deep snow, Kinder Eggs and roaring peat fires. Not forgetting the many, many whisky distilleries, which I loved even though I still hate whisky.
Cornwall - the Lizard, Hale, Kynance Cove... Just utterly beautiful; went for a week when I was younger and have been dying to go back ever since.
Norfolk - the whole North coast from Snettisham to Cromer, and the Broads, in particular. Family holidays from when I was slightly older and we got fed up of freezing on Islay every February! The beach at Titchwell (great name for starters) and the market towns further inland. And some of the many other brilliant place names, from Diss to Burnham Overy Staithe.
Can you tell I didn't go abroad until I was about 12 or 13?