Island Trails. Local tour guide and crofter James Tait offers tours steeped in the social history of Shetland, giving you a lively account, and no doubt many an introduction, to Shetland and its people. Opt for a guided tour around St. Ninian's Isle or a bespoke day's tour of the island. 01950/950228; www.island-trails.co.uk. From £25.
Shetland Nature. Here you'll find richly informed tours that cover a lot of ground while quietly tracking Shetland's otters, birds, and the unique wildflowers of the islands. Photographers are specially catered to. Shetland Islands. 01595/760333; www.shetlandnature.net. From £120.
Wildabout Orkney. Well-organized and informative tours, including Treasures of Orkney and Megalithic Masterpieces, run daily April to September. 01856/877737; www.wildaboutorkney.com. From £59.