I'm flying with friends from Heathrow to Zanzibar via Addis Ababa and Dar Es Salaam. Due to a low baggage allowance, we want to buy some toiletries like sun screen at Heathrow. We will also be buying alchohol there too. Does anyone know whether we will have problems in carrying these items in hand luggage from Addis Ababa to Dar Es Salaam and then from Dar Es Salaam to Zanzibar. We are happy to try and ask the shops to seal up the bags.