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((Short description|British infantry tank prototype))
((About-distinguish2|the British tank prototype|Russian prototype of the [[T-34]], the [[A-20 tank|A-20]]))
((Use dmy dates|date=February 2018))
((Use British English|date=February 2018))
((More citations needed|date=February 2018))
((Infobox weapon
| name               = A20
| image              = A20 Infantry Tank Side Profile.jpg
| type               = [[Infantry tank]]
| is_UK              = yes
| is_vehicle         = yes
<!-- Production history -->
| designer           = Mechanisation Board
| design_date        = 1939
| manufacturer       = Harland and Wolff
| production_date    = 
| number             = 2((sfn|Fletcher|2019|p=8))
| length             = 
| width              = 
| height             = 
| weight             = approx 40 tons
| suspension         = 
| speed              = ((cvt|15|mph|km/h))
| vehicle_range      = 
| primary_armament   = [[Ordnance QF 2-pounder|QF 2-pounder (40 mm)]] in turret<br> QF 2-pounder (40 mm) in hull
| secondary_armament = machine guns
| armour             = maximum of 80 mm
| engine             = 
| engine_power       = 
| pw_ratio           = 
| crew               = 7
))

'''A20''' was a British tank design by [[Harland and Wolff]] to meet an Army requirement for an [[infantry tank]] that could replace the [[Matilda II]] and [[Valentine tank]].  It was designed in the expectation that conditions would be similar to those of the [[World War I|First World War]].

The specification was produced by Superintendent of Tank Design at [[Woolwich]] with design by the Mechanization Board and passed to [[Harland and Wolff]] for detail work and to build a pilot.
Four pilots were ordered in February 1940. Two - A20E1 and A20E2 - were built. The first pilot took part in trials in June 1940.<ref>Chamberlain & Ellis p66</ref> It was shipped from [[Northern Ireland]] to [[Vauxhall Motors]] (without a turret) in August; thereafter to [[Mechanical Warfare Experimental Establishment]] at [[Farnborough, Hampshire|Farnborough]].((sfn|Fletcher|2019|p=8))  

The [[Battle of France]] indicated that [[trench warfare]] was not going to be the case in the Second World War. A new specification, A22, was drawn up and Vauxhall  who had been engaged to find a suitable power plant - their Bedford "twin six" engine - for the A20 were instructed to bring a tank based on the A20 into production as soon as possible. This would enter service as "Tank, Infantry, Mark IV" later named [[Churchill tank|Churchill]]. The first pilot Churchill was finished by November 1940.

The decision to cancel the order for 100 A20 was made in June 1940 and that the four pilot models - constructed of mild steel - would be used for component testing.

After the MWEE, the A20E1 moved to the Experimental Bridging Establishment, [[Christchurch, Dorset|Christchurch]] then back to Farnborough, this time to the Wheeled Vehicle Experimental Establishment. There it was used as trial load to test a twenty-wheel 70-ton capacity tank transporter trailer built by Cranes of [[Dereham]].((sfn|Fletcher|2019|p=8))

==Notes==
((reflist))

==Sources==
*((citation |first= Chris |last=Shillito |url=http://freespace.virgin.net/chris.shillito/a22new/articles/a20devtext.htm |title=A20 |archive-date=16 March 2013 |archive-url=https://web.archive.org/web/20130316063146/http://freespace.virgin.net/chris.shillito/a22new/articles/a20devtext.htm ))
* ((cite book |last1=Chamberlain |last2=Ellis |first1=Peter |first2=Chris |title=British and American Tanks of World War II |date=1969 |publisher=Arco Publishing ))
* ((cite book |title=Churchill Infantry Tank  |last=Fletcher |first=David |others=illustrated by Henry Morshead  |publisher=Osprey |series=New Vanguard 272 |year=2019 |isbn=9781472837349)) <!-- covers A20, the seven main marks, Gun Carrier and service  "Russia and later with the Irish, Jordanian and Australian Armies" -->



((WWIIBritishAFVs))

[[Category:Infantry tanks]]
[[Category:World War II tanks of the United Kingdom]]
[[Category:Heavy tanks of the United Kingdom]]
[[Category:Abandoned military projects of the United Kingdom]]
[[Category:Trial and research tanks of the United Kingdom]]


((mil-vehicle-stub))
((World-War-II-stub))

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