who played the role of the first aforementioned character in the serial?
Reginald Tate
Bernard Quatermass
 Morell considered the offer but declined the part, which Cartier then offered to another actor who had appeared in "It Is Midnight, Dr. Schweitzer", Reginald Tate, who accepted.
what is "the quatermass experiment"? A British science fiction serial when was it aired? Summer of 1953 name a few characters from it? Professor Bernard Quatermass, Victor Carroon, Paterson and Briscoe on which network was it aired? BBC Television did it ever have to close its broadcast during any war? Yes. On 1 September 1939, two days before Britain declared war on Germany what show was the first to air on that network? Opening of the BBC Television Service when was the network launched? 1927
wiki:12096940
Bernard Quatermass [SEP] In television (1950s)
The director assigned to the serial, which was eventually named "The Quatermass Experiment", was Rudolph Cartier. A few months beforehand he had directed a play entitled "It Is Midnight, Dr. Schweitzer" for the BBC, and he offered the role of Quatermass to one of the stars of that play, André Morell. Morell considered the offer but declined the part, which Cartier then offered to another actor who had appeared in "It Is Midnight, Dr. Schweitzer", Reginald Tate, who accepted. The serial was a success, with the British Film Institute later describing it as "one of the most influential series of the 1950s." The following year the BBC's Controller of Programmes, Cecil McGivern—who had initially feared that viewers would not accept such an unusual name for the leading character—noted in reference to the impending launch of the rival ITV network that: "Had competitive television been in existence then, we would have killed it every Saturday night while ["The Quatermass Experiment"] lasted.