Not many cheap, decent, bass-friendly dual function overdrive/distortion pedals out there either!
I suggest a Hardwire CM-2 (£45 from Amazon), EHX Bass Soul Food (£59) or Glove (£39), or Behringer BDI21 (£21) for overdrive and Bass Big Muff for fuzz (£50 most places), and you can pick up a used 105Q for around £60 or less.
Or get a B1Xon to get all of those effects in one box cheaply and quickly, maybe switching certain effects over to separates as you go along!