If you are in the UK for less than 3 months, you need to apply for a police clearance certificate from your home country or the country where you have lived for 10 years or more – as stated below.
A police clearance certificate, issued by a country outside the UK, is required for every country where the person has been present for 12 months or more, in the 10 year period prior to the application, while the person was aged 18 or over. The requirement for applicants to evidence their criminal record strengthens the existing process enabling us to establish whether the person has committed any offences overseas.
If you are in the UK for more than 3 months and / or you are seeking employment in the UK, you must complete both Police clearance from the country you lived more than 10 years and also a Standard DBS from the UK.
A Standard DBS: A standard DBS check is a criminal record check that shows information of all cautions, warnings and reprimands a person has. It is the middle level of DBS check available and can only be requested by employers or organisations for roles that require it. It is carried out by the Disclosure and Barring Service (DBS) in England and Wales, and Disclosure Scotland for north of the border. It is not required in the case of Medical Electives unless the candidate is a resident in the UK or been here for more than 3 months. More information could be found here below:
About us - Disclosure and Barring Service - GOV.UK (www.gov.uk)