After several years of low key tournaments with the major nations absent, the 2007 Championship was the largest ever with 16 teams competing in two Pools, including four Six Nations countries, plus Spain keen to do well having been replaced Italy in that competition. England and France were as usual represented by "A" teams, and Wales sent a development squad, but other countries appeared to be at full-strength.
Pool B was also of interest with four nations making their 15-a-side debuts - Finland, Luxembourg, Romania, and Serbia.