Until the mid nineteenth century, most law degrees in England (the BCL at Oxford and Durham, and the LLB at London) were postgraduate degrees, taken after an initial degree in Arts. The Cambridge degree, variously referred to as a BCL, BL or LLB, was an exception: it took six years from matriculation to complete, but only three of these had to be in residence, and the BA was not required (although those not holding a BA had to produce a certificate to prove they had not only been in residence but had actually attended lectures for at least three terms). These degrees specialised in Roman civil law rather than in English common law, the latter being the domain of the Inns of Court, and thus they were more theoretical than practically useful. Cambridge reestablished its LLB degree in 1858 as an undergraduate course alongside the BA, and the London LLB, which had previously required a minimum of one year after the BA, become an undergraduate degree in 1866. The older nomenclature continues to be used for the BCL at Oxford today, which is a master's level program, while Cambridge moved its LLB back to being a postgraduate degree in 1922 but only renamed it as the LLM in 1982.