The Sentinels are Cleveland Tower, to the left, and Clydesdale Tower, to the right. They are 32 storeys tall according to the Edinburgh University Tower Block site, which describes them as having 244 dwellings per block, and they were built by the contractor Bryant for the city council of Birmingham
Link . Cleveland Tower was completed in 1970, Clydesdale in 1971, according to Wikipedia, which describes their unusual social history
Link . The Sentinels were the highest housing blocks in the city until they were surpassed in 2019. Originally council flats, they are now owned by a housing association.
The Sentinels are seen here from Blucher Street off Holloway Head, near the synagogue, a viewpoint which will presumably be lost once the construction in the foreground is completed.