In not so distant past, there's been a 'trend' (and much cheaper option too) to update the period houses with aluminium double glazed windows.
Many of these no longer meet the regulations not to mention have never looked quite right on the period houses. There's never been a better time to give your home a well deserved face lift with the new timber box sash windows and reinstate the unique style of your period home!
The design of the sash windows has much improved in the past decade and you can now have beautiful timber double glazed sash windows to match the original style...