I have just recently started researching an Akers family of Woolwich, and I am wondering if there may be a link with your research.
I have traced the relevant line back to Henry John Akers, who was born about 1826 in Woolwich.He married Elizabeth Catherine Hall (a native of Queenborough Kent) on 18 September 1848 at St.George the Martyr Southwark.
They had (at least) seven children, the first two of whom were born in Woolwich;Catherine Mary in 1849 and Henry Edward in 1852.The other five children were born in Plumstead Kent, Deptford Kent, Greenwich Kent, Rotherhithe Surrey and Bermondsey Surrey.
The family subsequently moved to Penarth in Glamorgan, and daugher Sarah (born 14 April 1864 at Rotherhithe) married Joseph Hall (no close relative and from an entirely different part of the country, namely North Shields) at Cardiff on 24 April 1888.
According to Henry John Akers' marriage certificate, his father was a William Akers, shipwright.
I do not have easy access to Kent records, but suspect that William's wife may have been Sarah, possibly nee Chittenden.Coincidentally, both our lines seem to trace back to a William and Sarah, but not the same William and Sarah, since my William and Sarah would seem to have both died just prior to the 1851 Census, about 10 years older than your William and Sarah who seem to have survived to the 1851 Census.