Lovely!!! My husband, MIL and I were driving through Northumberland last year (October/November) and we impulsively decided to stop at Holy Island (luckily it was the right time for the tides!) and it was amazing! Didn't have enough time to make it to the castle, but it was lovely. I saw a little harbor seal just chillin' along the side of the causeway too. It made my day!
My heart still belongs to Yorkshire, but gosh, Northumberland is giving Yorkshire a run for its money. Alnwick Castle...Holy Island...the Cheviot hills...there's a lot to love about Northumberland!