Hi
Air Lesotho was taken over by Ross Air in about 97 i think. They were operating Twin Otto's, 206's and I think the odd 207. They apparently ran at a loss and pulled out, damaging the general operation in Lesotho. (Although they gained a whole lot out of the take over)
There was a family company based in Matatiele called Senqu air Services which operated 7/8 206's. Was an awesome operation. They operated for many many years but pulled out in about 96 due to Politics in the Country etc.
Last I heard Lesotho were looking for company's to start up an operation, but not sure what is presently happening.
There is the odd Private aircraft, and Mission aviation etc. operating there.
Cheers
Mal