He was a son of Emil Teichmann and Mary Lydia Schroeter, and younger brother of Max Teichmann (1876, Eltham, Kent -1963) and Oskar Teichman (1880, Eltham, Kent - 1959). He was educated at Gonville and Caius College, Cambridge University. At the time of his death, Sir Eric had been serving as adviser to the British Embassy at Chungking.
Teichman has been described as "one of British diplomacy's dashing characters, [a] flamboyantly enigmatic explorer-cum-special agent. He went on a number of "special missions" and "fact-finding journeys" throughout Central Asia, as early as before World War I. In 1935 he travelled by truck across the Tarim basin to Kashgar, and there by pony and on foot across the Pamir and Karakoram ranges to Gilgit, and then to New Delhi. In 1943 he began on his final foreign journey from Chongqing. After caravaning as far as Lanzhou, his truck continued along the outer Silk Road, across the Tarim basin, and over the Pamir Mountains to New Delhi. From there he flew back to England, where a few days later, at the age of 60, he was killed.
On 3 December 1944, whilst at home at Honingham Hall, his estate in Norfolk, England, Teichman heard the sound of gunfire nearby. He went out to confront two poachers (Private George E. Smith of Pittsburgh and Private Leonard S. Wijpacha of Detroit) who were trespassing in the grounds of his estate. Both intruders were American soldiers based at a nearby USAAF airfield and each was armed with an M1 carbine. Sir Eric was killed during the confrontation, receiving a fatal gunshot wound to the head.
Private Smith (army serial number: 33288266) was subsequently court-martialled at RAF Attlebridge, convicted of murder and executed by hanging on the gallows at HMP Shepton Mallet on 8 May 1945 (i.e. VE day), despite appeals for clemency, including one from Ellen, Lady Teichman. His companion, Private Wijpacha was charged with being an accessory to murder, but was not sentenced to death. Smith's remains are buried in grave 52, row 3 in Oise-Aisne American Cemetery Plot E, France.
Teichman was buried in the churchyard of St Andrew's Church, Honingham. His grave is in the corner plot, directly in line with the now-demolished Honingham Hall. His widow was buried in the same grave in 1969.
- Teichman, Eric. 1916. “Routes in Kan-su”. The Geographical Journal 48 (6). Wiley: 473–79. doi:10.2307/1779817.
- Travels of a consular officer in North West China, 1921
- Travels of a consular officer in Eastern Tibet, 1922 
- Journey to Turkistan, 1937
- Affairs of China, 1938