The fuel systems will generally have a series of transfer pumps, which will pump the fuel from the tanks, into a collector group, for example on Tornado there is one collector tank for the front group which feeds the left engine, and two smaller collector tanks for the rear group which feeds the right engine.
The collector tanks will then contain boost pumps to feed to the engine driven pumps, which really crank up the pressure. Most if not all modern aircraft will have double ended boost pumps, so that the fuel can be drawn from either end during inverted flight/negative g. Prior to this many older aircraft had a fuel accumulator to compensate instead, which stored a limited amount of fuel under pressure to feed the engines during negative g.
The Jaguar was designed around the transition period of accumulators to double ended pumps, so was initially designed to have both D.E. pumps AND fuel accumulators. In service however, the accumulators were never fitted, as they were found to be unnecessary, despite the fact that they still appear in the fuel system diagrams!