Mr Cresswell, 57, was found in the collapsed wreckage of Didcot Power Station has been named as Ken Cresswell. Mr Cresswell, 57, from Rotherham in South Yorkshire, died after the defunct plant partially collapsed in February.
Police said he had been formally identified after his body was found on Wednesday, and his family had been informed. The body of another man, John Shaw, 61, also from Rotherham, is still missing.
A Thames Valley Police spokesman said: “Our thoughts are with his family and also with the family of the remaining missing man, John Shaw, and we would ask that their privacy is respected during this incredibly difficult time.
“A joint Thames Valley Police and Health Safety Executive (HSE) investigation is ongoing to establish the circumstances which led to the collapse of the boiler house and the subsequent deaths.”
The body of a third man, Christopher Huxtable, 34, of Swansea, was recovered on 31 August.The iron and steel structure was being prepared for demolition before it crumbled and was previously too unstable to be approached.
The remainder of the building was demolished in July.