Useful web sites for hotel details and bookings:
Hotels in Bloomsbury, Covent Garden, Russell Square, Holborn or Fitzrovia are close to the British Library. Postcodes will begin with WC1, WC2, W1 or NW1.
http://www.hotels-in-london-bloomsbury.com/
http://www.london-hotels-guide.co.uk/
http://uk.visitlondon.com
http://www.visitlondonoffers.com/
http://www.totalstay.co.uk/
http://www.londontown.com/
www.fine-hotels-london.com
http://www.justtourhotels.com/england/mainlondon.htm
http://www.bedandbreakfasts-uk.co.uk/