text: As the number of Trusts grew, so did their combined membership, from 3,000 in 1960 to 21,000 in 1965. Membership topped 100,000 in 1975, and in that year Wildlife Watch was launched as a children's naturalist club. By the late 1980s membership had reached 200,000, increasing to 260,000 in 1995, and over 500,000 by 2004.  The combined membership for 2007 stood at 670,000 members, 108,000 belonging to the junior branch Wildlife Watch.
  By 2012, membership was over 800,000, with over 150,000 Wildlife Watch members.
  List of Wildlife Trusts
  Alderney Wildlife Trust
  Avon Wildlife Trust
  Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust
  Cheshire Wildlife Trust
  Cornwall Wildlife Trust
  Cumbria Wildlife Trust
  Derbyshire Wildlife Trust
  Devon Wildlife Trust
  Dorset Wildlife Trust
  Durham Wildlife Trust
  Essex Wildlife Trust
  Gloucestershire Wildlife Trust
  Gwent Wildlife Trust, Wales
  Hampshire and Isle of Wight Wildlife Trust
  Herefordshire Wildlife Trust
  Herts and Middlesex Wildlife Trust
  Isles of Scilly Wildlife Trust
  Kent Wildlife Trust
  Leicestershire and Rutland Wildlife Trust
  Lincolnshire Wildlife Trust
  London Wildlife Trust
  Manx Wildlife Trust / Treisht Bea-Feie Vannin
  Montgomeryshire Wildlife Trust
  Norfolk Wildlife Trust
  North Wales Wildlife Trust
  Northumberland Wildlife Trust
  Nottinghamshire Wildlife Trust
  Radnorshire Wildlife Trust
  Scottish Wildlife Trust
  Sheffield & Rotherham Wildlife Trust
  Shropshire Wildlife Trust
  Somerset Wildlife Trust
  Staffordshire Wildlife Trust
  Suffolk Wildlife Trust
  Surrey Wildlife Trust
  Sussex Wildlife Trust
  Tees Valley Wildlife Trust
  Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire
  Wildlife Trust for Birmingham and the Black Country
  Wildlife Trust for Lancashire, Manchester and North Merseyside
  Wildlife Trust of South and West Wales
  Ulster Wildlife Trust
  Warwickshire Wildlife Trust
  Wiltshire Wildlife Trust
  Worcestershire Wildlife Trust