| Main centres: | 1-3 business days | 
| Regional areas: | 3-4 business days | 
| Remote areas: | 3-5 business days | 
Airmail cover from London to Khartoum, Sudan - 2 May 1952 with 9 pence British stamp - First Flight between London and Johannesburg by B.O.A.C - Back cover Khartoum 3 May 1952 cancellation




