Canon inject catridges 540 or 541 . (Stroud GL6)

I am looking for some cartridges for a Canon 3600 series (numbered 540 black and 541 colour. Need to finsih printing some labels and my usual laser printer will not handle small sheets. I also have an old Canon which has run out of ink so if anyone has spare cartriridges new or part used, please let me know. Will probably never use it again! Can collerct in Stroud area. Thanks