United Utilities' incoming chief executive has spent £400,000 on shares in the water supplier.Steven Mogford, who will take the reins at United Utilities on 31 March, took 70,814 shares at 564.9p a time, his first purchase of shares in the company. Mogford's appointment was announced in November. He is moving to United Utilities from the defence electronics company SELEX Galileo, which is owned by the Italian aerospace and defence group Finmeccanica. He has also been a chief operating officer of British Aerospace.United Utilities, which owns and operates the water network in the northwest of England and serves about 7m people, said its confident of delivering a "solid underlying financial performance" for the year to 31 March.Top Director BuysUnited Utilities Group (UU.) Director name: Mr Steven L MogfordAmount purchased: 70,814 @ 564.86p Value: £400,0003i Group (III) Director name: Mr Michael James QueenAmount purchased: 100,000 @ 283.33p Value: £283,330Unilever (ULVR) Director name: Mr Paul PolmanAmount purchased: 9,932 @ 1,835.00p Value: £182,252F&C Asset Management (FCAM) Director name: Mr Edward BramsonAmount purchased: 195,000 @ 77.42p Value: £150,969Centamin Egypt Ltd. (CEY) Director name: Mr Harry Michael Amount purchased: 50,000 @ 124.92p Value: £62,460Unilever (ULVR) Director name: Mr Jean-Marc Huët Amount purchased: 5,047 @ 1,835.00p Value: £92,612Informa (INF) Director name: Mr Adam WalkerAmount purchased: 18,860 @ 397.70p Value: £75,006Avanti Communications Group (AVN) Director name: Mr David J WilliamsAmount purchased: 11,895 @ 416.00p Value: £49,483Witan Inv Trust (WTAN) Director name: Mr Andrew L C BellAmount purchased: 10,000 @ 483.50p Value: £48,350International Ferro Metals Group (IFL) Director name: Mr John BallardAmount purchased: 200,000 @ 23.31p Value: £46,620Top Director SellsF&C Asset Management (FCAM) Director name: Mr Alain GrisayAmount sold: 1,000,000 @ 77.12p Value: £771,200Michael Page International (MPI) Director name: Mr Stephen InghamAmount sold: 110,676 @ 504.00p Value: £557,807Michael Page International (MPI) Director name: Mr Stephen PuckettAmount sold: 110,650 @ 504.00p Value: £557,676Michael Page International (MPI) Director name: Mr Stephen InghamAmount sold: 73,307 @ 504.00p Value: £369,467Michael Page International (MPI) Director name: Mr Stephen PuckettAmount sold: 58,259 @ 504.00p Value: £293,625Close Brothers Group (CBG) Director name: Mr Preben PrebensenAmount sold: 32,120 @ 839.67p Value: £269,702Spirax-Sarco Engineering (SPX) Director name: Mr Tony ScrivinAmount sold: 11,727 @ 1,857.95p Value: £217,882Senior (SNR) Director name: Mr Mark RollinsAmount sold: 156,146 @ 134.89p Value: £210,625Rolls-Royce Group (RR.) Director name: Mr James M GuyetteAmount sold: 34,110 @ 570.76p Value: £194,686Spectris (SXS) Director name: Mr Roger StephensAmount sold: 12,121 @ 1,410.12p Value: £170,921