This is a macro-enabled Excel workbook which can be used to parse the NATS UK & Ireland Standard Route Documents to produce PFPX readable routes. The conversion method does not require the user to have anything other than a working copy of Excel (tested on 2013, but any version 2007 or later *should* work).
Full instructions are contained within the file.
Limitations: Currently you will see about 5% more airport to airport routes than are included in the SRD file, due to the way that the document is broken down during the conversion, however I am working to improve this ratio.
*****This is a re-upload of the same version which was present prior to the forum upgrade******