With the transitional period underway, Brexit continues to create uncertainties. Sources say that Google is planning on moving the data of British users out of the EU and into the US, making it subject to US data protection laws. British Google users will lose the protection of one of the most aggressive data protection rules in the world and instead come under the far weaker US privacy protections. If the EU deem the British privacy rules post Brexit do not meet their own standard, it could result in British authorities and business experiencing difficulties in accessing data from within the EU. 

One could not imagine why Britain would relax its privacy rules but we will have to sit and wait to see what happens.