The LHCb experiment is the dedicated flavour physics experiment at the LHC and is planning its second major upgrade during Long Shutdown 4 in the early 2030s to increase its instantaneous luminosity by about one order of magnitude. At the heart of this will be a new Vertex Locator, which will continue to provide precise spatial resolution for particles produced in the proton-proton collision region or as products of flavoured particle that fly a measurable distance before decaying. In addition, the sensors will have to provide precise timing information to help disentangle the many collisions happening in one proton-proton bunch crossing. A low material budget is required to minimise multiple scattering with the use of a non-vacuum-tight RF-shield being considered, which however requires operation in ultra-high vacuum. Finally, the detector needs to be able to function in a radiation environment with a fluence as high as \(6\times 10^{16}\) 1 MeV n \(_{eq}\) and 2.4 Grad TID.