as you are in derby , Loom's scrap yard in spondon will get one out for about £100

what mark van have you got ? , if its a mk5 (91) on its a straight swap although the fuel pumps are coded to the key so you will need the original key or bypass the PATS which means taking the pump off

as for fitting , most garages will fit it but they wont be cheap , if i wasnt so busy i could have fitted it for you !