Dyson dc 25 bottom filter keeps blowing off. - 2003 Jaguar X-Type

I am wondering if the fuse blows instantly or whether it lasts a while?

Fuse ratings for cars are usually mean or average values so a 20 amp fuse needs roughly 40 amps to cause it to instantly fail. I have not heard of a cigarette lighter needing that much current so I guess there is a fault that should be located and cured before you have a fire.
Maybe it is the element that is faulty...

I think fitting a 25 amp fuse would be slightly foolish...

If the fuel pump keeps going out, are you using new fuel pumps? Is it a quality fuel pump? Your changing the sock filter and inline filter. The bottom of gas tank is clean. no trash in tank?
My next thought is to do voltage drop test for voltage and ground, at the fuel pump.

What is the PED fuse, and what does it control?

sounds like you may have a wire shorting out,a bare wire with dc power running through it touching a metal surface causing the fuse to blow.

Fuse 25 should be for the power windows - it powers the ACC delay relay.

Roy can you please check fuel filter? If a car used for a while and if gasoline quality is not so high eachtime you fill, residues can be collected at bottom of tank close to the hole which pump is sucking. filter must be clogged. if you manage to find it and remove it, you can understand by blowing from one side. be sure that no gasoline insde please.

YOU STATED YOU CHECKED YOUR FUEL FILTER. YOU CAN'T JUST LOOK AT IT. DIESELS REQUIRE FUEL ON DEMAND. IF YOUR FUEL FILTER IS NOT FLOWING THE REQUIRED AMOUNT OF FUEL YOU WILL NOT GET THE PERFORMANCE FROM IT. THERE HAS TO BE A FUEL RESTRICTION THERE SOMEWHERE. CHANGE THE FUEL FILTER OUT WITH A NEW GOOD QUALITY FILTER. ON CAT DIESEL ENGINES A CAT PRIMARY FUEL FILTER WILL OUT FLOW A GENERIC FUEL FILTER EVERY TIME. TRUST ME, YOU HAVE A FUEL RESTRICTION PROBLEM. YOU GOT TO THE BOTTOM OF YOUR FUEL TANK AND SUCKED UP SOME GARBAGE TO FINISH THE FILTER OFF. FUEL FILTERS IN DIESELS SHOULD BE CHANGED EVERY 15,000 MILES AT MINIMUM. I RECOMMEND EVERY 10,000 TO KEEP PERFORMANCE AT PEAK LEVELS.

check the wiring to fuel tank something shorting. replace wires to fuel tank.

ok put in a 20 if that blows put in a 25 do NOT go over 25A fuse if it keeps going out let me know

It is most likely fuel heater in bottom of filter housing. Unplug it on backside of housing and reinstall good fuse and see if it quits blowing. If so, updated fuel heater availible through Ford.