Custom-code are a subsidiary of JBS Autodesigns.
Their remaps do exactly what you would want them to do. Maybe some of their bhp claims are a little on the high side, but their reputation is growing as a tuning company.
http://www.jbsautodesigns.co.uk/custom-code.phpI have their phase 2 remap, which took 2 days to carry out and IMHO was well worth it.
JBS are known more for their big conversions, but their CC remaps are relatively good value for money compared to some other tuners.
Their phase 2 remap on the Edition 30 costs around £740 and includes the fitting of the Autotech HPFP.

The APR HPFP IMO is overpriced, BUT is ultimately a higher quality one.