season                   name  teams                          relegated to league                            promoted to league      promoted from league                          relegated from league
0  2005 - 06  national division two     14                          henley hawks orrell                       barking halifax redruth          moseley waterloo                                         orrell
1  2006 - 07  national division two     14                                         none         bradford & bingley cambridge nuneaton  esher cornish all blacks                   bradford & bingley harrogate
2  2007 - 08  national division two     14                               waterloo otley               blaydon southend westcombe park          manchester otley                  halifax henley hawks nuneaton
3  2008 - 09  national division two     14             cornish all blacks pertemps bees              cinderford mount 's bay tynedale     birmingham & solihull  westcombe park southend mount 's bay waterloo
4  2009 - 10      national league 1     16  esher newbury sedgley park otley manchester                      london scottish nuneaton                     esher                    newbury nuneaton manchester
5  2010 - 11      national league 1     16                                     coventry             barking macclesfield rosslyn park           london scottish               cornish all blacks otley redruth
6  2011 - 12      national league 1     16                        birmingham & solihull              ealing trailfinders fylde jersey                    jersey      barking birmingham & solihull stourbridge
7  2012 - 13      national league 1     16                                        esher  loughborough students old albanians richmond       ealing trailfinders            cambridge sedgley park macclesfield

Table as JSON:
{"season":{"0":"2005 - 06","1":"2006 - 07","2":"2007 - 08","3":"2008 - 09","4":"2009 - 10","5":"2010 - 11","6":"2011 - 12","7":"2012 - 13"},"name":{"0":"national division two","1":"national division two","2":"national division two","3":"national division two","4":"national league 1","5":"national league 1","6":"national league 1","7":"national league 1"},"teams":{"0":14,"1":14,"2":14,"3":14,"4":16,"5":16,"6":16,"7":16},"relegated to league":{"0":"henley hawks orrell","1":"none","2":"waterloo otley","3":"cornish all blacks pertemps bees","4":"esher newbury sedgley park otley manchester","5":"coventry","6":"birmingham & solihull","7":"esher"},"promoted to league":{"0":"barking halifax redruth","1":"bradford & bingley cambridge nuneaton","2":"blaydon southend westcombe park","3":"cinderford mount 's bay tynedale","4":"london scottish nuneaton","5":"barking macclesfield rosslyn park","6":"ealing trailfinders fylde jersey","7":"loughborough students old albanians richmond"},"promoted from league":{"0":"moseley waterloo","1":"esher cornish all blacks","2":"manchester otley","3":"birmingham & solihull","4":"esher","5":"london scottish","6":"jersey","7":"ealing trailfinders"},"relegated from league":{"0":"orrell","1":"bradford & bingley harrogate","2":"halifax henley hawks nuneaton","3":"westcombe park southend mount 's bay waterloo","4":"newbury nuneaton manchester","5":"cornish all blacks otley redruth","6":"barking birmingham & solihull stourbridge","7":"cambridge sedgley park macclesfield"}}