2017: Early April 

SBA Annual Botanical Exhibition
Westminster Central Hall, Storey’s Gate, SW1H 9NH  
15 to 23 April 2016, from 11am to 5pm including Sundays
Workshops on Sat: 10:20-12:30, 1:30-4 TBC
"This showcase exhibition will feature some 700 selected works. according to the Victorians who took great delight in giving meanings to individual flowers so that they could send coded messages which otherwise could not be spoken."

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2017: Early April ​​

"The Other Art Fair
Truman Brewery
7-10 APRIL 2016, Victoria House, Bloomsbury Square
"The fair is unique in its approach to supporting artists, providing a platform where they can further cultivate their professional careers. In addition to the four days at the fair, we support them throughout the year by offering free seminars, workshops and lectures. "

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2017: Early April ​

International Pillow Fight Day
Central London
Saturday April 5, 2014 3:00 pm to 5:00 pm
"A pillow fight is a common game in which they engage in mock physical conflict, utilizing pillows as weapons."

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2017: Early April (Fr - Sat)

The Selvedge Spring Fair
Old Chelsea Town Hall
4-5 APRIL 2014
Friday 11am-5pm Evening reception 6pm-9pm Saturday 10am-4pm
"With over 100 stands – a carefully curated mix of antique textiles, talented designer makers and beautiful haberdashery – there is no better opportunity to buy special, handcrafted textiles and enjoy meeting and talking to the talented people that create them,"

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2017: Late April

Lyme Regis Fossil Festival 
St Michael's Business Centre Church Street, 
Lyme Regis DT7 3DB
2014: 1-3 May
Tue-Sat: 11am-5pm / Sun: 12-5pm
"Museum scientists will be at the Fossil Fair to show off their favourite specimens. Bring along your own fossils for identification, take part in science challenges and find out what it's like to work in natural history."