From the live updates on the BBC's website regarding the Sudan situation...
"10:08
RAF plane takes off north of Khartoum
A Royal Air Force plane has departed an airfield north of Sudan's capital Khartoum and is heading to the RAF Akrotiri military base in Cyprus,
according to a plane tracking website, which BBC News has been monitoring
The flight landed in Sudan just before 09:00 BST and then departed just after 09:30.
The RAF aircraft is a Lockheed C-130J Hercules – a plane which can be used in airlift missions.
It is a military transport aircraft which can land on rough terrain and can hold around 100 people.
The plane is likely to be part of the UK’s attempts to evacuate its citizens out of Sudan. We will continue to monitor its movements and bring you updates."
https://www.bbc.co.uk/news/live/uk-65371585