It is situated approximately south of Bury St Edmunds and north of Sudbury on the B1066. Also it is north of Hartest. A small hamlet, recorded in Domesday as "Brochola" or "Broclega": the name originates from 'woodland clearing by a brook'.
Mill Road marks the location of a former post mill which was demolished in 1930. East of B1066 is Willow Tree Farm (now Britton's Farm) (farthest out) with a small chapel (halfway to B1066). West of B1066 is Mile Farm (now Long's Farm) with the Pumping Station farthest west.
Brockley Hall and St Andrew's church are still around 1 km north of the village. St Andrew's dates from mediaeval times but was renovated in 1866. It is a grade II* listed building.
There have been no public houses in the village since the 1980s, although prior to that there had been two: the Fox and Hounds and the The Six Bells.
A blacksmith used to be next door to the pub. A shop, and petrol station closed some years ago.
Brockley Cricket Club started over 50 years ago and supports three league teams playing in local leagues, a midweek team and a youth programme. The village also supports an indoor bowls club that has enjoyed some success in the past.