Summers, Groves and Day
Summers, Groves and Day of Millbrook Foundry, Southampton
1834 Company founded and undertook railway repair work on locomotives
1845 Groves left the partnership. '...the Copartnership heretofore subsisting between us the undersigned, William Alltoft Summers, John Thomas Groves, and Charles Arthur Day, all of Milbrook, in the county of Southampton, and also of Northam, in the town and county of the town of Southampton, Engineers, Millwrights, Iron Founders, and General Dealers, carrying on business under the style or firm of Summers, Groves, and Day, was this day dissolved by mutual consent (so far only as respects the said John Thomas Groves)...'
Subsequently became Day, Summers and Co
Sources of Information
-  Gazette Issue 20475 published on the 30 May 1845
- British Steam Locomotive Builders by James W. Lowe. Published in 1975. ISBN 0-905100-816