For innovative ideas and sympathetic plans: Brunskill Design Architects, Herts.
New patio doors - let in some light plus great visibility and maximum accessibility: SunSeeker Doors, Herts/Beds.
Revamp a room exactly as you want it - kitchens, bathrooms, bedrooms, studies, etc - PNI Property Services, Home Counties/London.
These are established, smallish, British companies with good reputations for delivering affordable quality. View the websites, contact the companies for an initial discussion ... get the ball rolling today and enhance your lifestyle!