His father was the painter Sir William Beechey, RA and his stepmother was Anne Jessop.
[4] Some time before 1816, he had become secretary to Henry Salt, the British consul-general in Egypt, and at the latter's request accompanied Giovanni Belzoni in that and the following year beyond the second cataract, for the purpose of studying and making designs of the fine monuments existing at Thebes.
In the laborious excavation of the temple of Ipsambul, Beechey took his share; he also copied the paintings, in the king's tombs in the valley of Biban-el-Muluk, which had lately been opened by Belzoni.
About 1820 he returned to England, and the next year was appointed by Earl Bathurst, on the part of the colonial office, to examine and report on the antiquities of the Cyrenaica, his brother, Captain Beechey, having been detached to survey the coast-line from Tripoli to Derna.
The results of this expedition, which occupied the greater part of the years 1821 and 1822, were chronicled in a journal kept by the brothers, to which Henry Beechey added numerous drawings, illustrative of the art and natural peculiarities of the classic region they were exploring, many of which were left out when the narrative came to be published in 1828.