Stuck on two clues any help much appreciated have spent the last two hours trying to solve them.
Clue 5 - Harris peak, sometimes paired with Oreval (7) only word I can find is ULABHAL but I think the third letter should be L to fit in with the clue across.
Clue 15 - Water that once lay at foot of Edinburgh Castle Rock (3,4) N*R **CH
As the 5d clue names the English (non Gaelic) version of Oireabhal as Oreval.
The answer is the English (non Gaelic) version of Ulabhal which is ULLAVAL