The Hackney Drapers, Chatsworth Road: http://www.thehackneydraper.co.uk
In this Aladdin's cave you will find the most gorgeous textiles like these which Im thinking about for the living room and playroom.
The Cloth House Soho: https://www.clothhouse.com
An old favourite of mine, they stock beautifully hand and block printed cottons. Here is one Im thinking about using for curtains in our spare bedroom, a lovely peach and navy colour combo.
I just happened upon this place a couple of weeks ago. Surprisingly decent prices made to measure curtains. Im thinking about these tomato or yellow colours for the kitchen.