The first time the UK government tried this tactic and succeeded was in 1988 when the JCVI (Joint Committee on Vaccinations and Immunizations) sanctioned the MMR vaccine Pluserix for use in the UK. Pluserix had previously been banned in Canada, causing thousands of children to suffer irreversible side effects as a result. This vaccine went on to cause the same devastation in the UK.
The MHRA (Medicines and Healthcare Products Regulatory Agency) issued a press release on the second banned vaccine to be repackaged and introduced:
We understood that the Medi-Mumps vaccine is manufactured from the same stock and processed in the same way as Pavivac mumps vaccine. (emphasis added) The MHRA, acting on advice from an independent advisory committee, the Committee on Safety of Medicines (CSM), has for a number of years objected to the importation of the Pavivac product because there is insufficient information available to assure its safety, quality and efficacy. See statement from the committee on safety of medicines (82Kb) for more details.
The Mumps vaccine, which is cultured on dog kidney cells, has been advertised as available in two private clinics, although one no longer lists it on their website.