It's interesting to compare PCGS and NGS. According to their websites, PCGS has slabbed over 21,000,000 coins, whereas NGS has 16,000 to it's name. In business terms, it's rather like comparing Macdonalds to your local chippie! Nevertheless, it's horses for courses and as we are discussing British coins it's worth taking a closer look at the figures. The 'population reports' for NGS and PCGS are both available on-line (you do have to register with NGS first though) and it’s interesting that PCGS have certified 10,500 British coins of which, staggeringly, 6,500 are year 2000 sovereigns! One wonders whether they were asked to do this for one client? So, stripping out this big anomaly (and there may be others that I failed to notice) the balance for British coins is very much in favour of NGS. Of course, PCGS are now in Europe and, judging by their website, making major inroads, particularly in France. I think, on balance, I would go CGS though.