Ramblers Worldwide Holidays are offering a 17 day Zambia and Botswana walking tour. It sounds really interesting with some highlights of the tour being the Victoria Falls, The Okavengo Delta and the Chobe National Park. However you'll need deep pockets to participate as the tour costs from Â£2762 which includes flights from London Heathrow. The single supplement is very reasonable at Â£95. The accommodation is in except for 2 nights in a chalets and lodges.
Bptswana has come into the public eye in the UK since the screening of the film the No 1 Ladies Detective Agency which was filmed in Botswana. I tried to look at the Botswana Tourist Board site but a "Bandwidth exceeded" message appeared so it looks like the tourist board isn't coping with the country's new found popularity.