Yesterday I noticed a high pitched whine which appeared to be coming from the boot area. The noise seemed worse at lower speeds. Today it has become problematic at starting having to keep the engine turning over longer to get it fired. I suspect it may be a problem with fuel pump.
Many thanks
Mike

You give no vehicle details, but it is normal for the low pressure fuel pump to be combined with the fuel gauge sender. This whole assembly fits into the top of the tank through a circular hole and seal, and operates submerged in fuel. I suggest you get this assembly renewed, the parts are not expensive and it's a reasonably straightforward job.

The separate high pressure fuel pump for injection is located on the engine.

Thanks for your help. I have a Skoda Yeti L&K 4x4 2.0L TDI 150 HP.