Building Society 4678 41 Mansfield Building Society¹ 229 12 Principality Building Society 4384 42 Dudley Building Society 228 13 Newcastle Building Society 3863 43 Vernon Building Society 217 14 Norwich & Peterborough Building Society 3403 44 Scottish Building Society 211 15 Stroud & Swindon Building Society 2514 45 Chesham Building Society¹ 196 16 Nottingham Building Society 2428 46 Bath Investment & Building Society 157 17 Dunfermline Building Society 2318 47 Chorley & District Building Society¹ 147 18 Scarborough Building Society 1733 48 Holmesdale Building Society¹ 142 19 Kent Reliance Building Society 1619 49 Buckinghamshire Building Society * 135 20 Progressive Building Society * 1248 50 Stafford Railway Building Society¹ 132 21 Cumberland Building Society 1185 51 Harpenden Building Society* 126 22 National Counties Building Society 956 52 Beverley Building Society¹ 117 23 Furness Building Society 770 53 Swansea Building Society 95 24 Cambridge Building Society 751 54 Earl Shilton Building Society¹ 88 25 Saffron Building Society 662 55 Shepshed Building Society 79 26 Leek United Building Society 661 56 Penrith Building Society¹ 74 27 Hinckley & Rugby Building Society 649 57 Ecology Building Society¹ 63 28 Manchester Building Society 565 58 Catholic Building Society¹ 38 29 Newbury Building Society 565 59 City of Derry