USA updated the flange repaired bikes from Spring 2011 - so by Jan 2020 it became a recall, which means when they next see the bike they must fit a new pump - no idea about UK -
but following the delivery stop terminology the USA use - it may mean they don't need to notify DVLA or customers - thus the dealership could well not have notification it has a recall - manufacturers like this cop out as it helps them maintain their reputation
SIB 16 01 20 RECALL 20V-471 FUEL PUMP CHECK
Summary:
As part of a previous Safety Recall (13V-617) a steel support ring was installed on the fuel pump flange. In rare cases, this repair can cause cracks in the quick-release coupling resulting in leaks with fuel odor or the leaking of small quantities of fuel. Since Spring 2011, a steel support ring has been installed in production on the fuel pump flange for the quick-release coupling. Depending on the model, the fuel-pump unit and/or additional fuel-pump unit (K25) must be checked in the affected vehicles and replaced, if condition #2 or #3 are found in figure 1. In addition, for the R 1200 GS (K25, 0317), the fuel distributor must be replaced in addition to the additional fuel-pump unit, as the quick-release coupling is no longer located directly on the flange. Customers will be notified by BMW Motorrad USA via First Class mail advising them of this recall. Customers will be asked to schedule an appointment with an authorized BMW Motorrad dealer to have the check/repair performed. In the case of vehicles that are in dealer inventory and have not yet been delivered, the Technical Campaign must be carried out before delivery to customers. Vehicles have been marked with a delivery stop.