
Never been to Kenya, but when I went to South Africa, Zimbabwe, Malawi I took American dollars as they are better known than sterling - there was no way I could have got the malawian quatcha in England :D :D
There will be loads of places to change it, if you are in a hotel then there or banks shops etc. In Zimbabwe we changed ours up on the black market and got twice as much as we would have in a bank

(wouldnt recommend it though - could get you into trouble :rolleyes:
Some places will also take American dollars instead of local currency :)