All the Harpsichord Makers and Technicians listed below are personal friends of mine and are highly recommended:

Cambridge: If you are lucky enough to live near Cambridge then David Wright is your man for repairs, servicing and concert hirings! David is also an excellent harpsichordist. +44 7941 093066

Also in Cambridge, Dan Tidhar, tuning and hiring, including Fortepiano:

Scotland: Edinburgh, William Hendry, Tunings, Hirings, servicing and repairs: 07929708448

Yorkshire: The Early Music Shop, new and second-hand harpsichord sales and spares. 

Shropshire: Ludlow, Edmund Handy. Clavichord maker, tunings, repairs and restorations of harpsichords and clavichords.

Norfolk: Alan Gotto, new instruments. Website: 

London: Andrew Wooderson, Maker, Hirings, tuning, servicing, maintenance courses, second-hand instruments - in fact everything that I do and more, but based in South East London! 

South Coast: Malcolm Rose, Maker, restorer, maker of harpsichord wire, tuning and hiring. Website: 

Somerset: Peter Barnes (that's me!) 07733619002

International: Carey Beebe has a list of European Harpsichord Makers on his site 

Carey Beebe's world beating site has so much useful information on tuning, replacing strings, plectra, etc. He is a world leader for harpsichord information. When you have some spare time, please look on 

The British Harpsichord Society also runs a useful website which hosts advertisements for used harpsichords and clavichords

The Early Music Shop caries a stock of spares and used instruments: