Hi
Eviand, And welcome to the forum ! I am going to suggest that your photos are not from 'The Berlin Airlift' but from the immediate period following, when national airlines were not allowed to fly into Berlin ? During that period Air Charter (who were not involved in the airlift) was heavily involved flying charters for British airlines !
A quote from 'The Berlin Boys'
Air Charter Ltd. London operated from 1951 until the end of 1959 scheduled cargo flights to Hamburg and Hanover, at which up to 70 flights a week were realize. Lots of cargo and passenger charters were operated too. From 1957 to 1959 they operated scheduled passenger flights on behalf of BEA - British European Airways on the internal german route network. At the end of June 1960 Air Charter merged with several other airlines into British United Airways.
And a photo below from the same source, on approach to Templehof, note the colour scheme, and the fact that this aircraft did not take part in the airlift, it's registration makes it slightly too new !