I am no computer expert (or expert in anything else for that matter!) but this might do it
PDF to JPEG universal document converter
I am intrigued to see the charts you are referring to.
Does this ROGAG 'procedure' level take you to a level that coincides with the ATC Surveillance Minimum level (which may be below the MSA)?
I don't know about Doncaster, but at our unit, ATCOs only have access to the UK AIP and not any of the commercial ‘plates’.