Quite a few twists Mabel...
Going back to the 1886 birth reg, there is this baptism
Albert Hartell
Birth Date 11 May 1886
Birth Place Staffordshire, England
Sub registration district Stafford
Also mistranscribed/misheard under Hartle, but you would have to view register to confirm, or BC
Albert Hartle
Birth Date 11 May 1886
Baptism Date 1 Aug 1886
Baptism Place St Mary, Stafford, Stafford, England
Mother Sarah Hartle
FHL Film Number 1526110
Reg seems to have been born Staffordshire moved back to Leicester with mother and was raised by the Beckett family. Sarah died 1905, James Beckett died 1926. 1911 has 4 children born 1 died. Mary 1889, Elizabeth 1890, (Hannah b 1893 d 1898) Lilian 1895. So possibly James may or may not be father of Albert, but treated him so, at least accepting Albert's son as grandson.
Maybe by the time Annie was settled, Reg wished to stay with the Beckett family..some things are unknown.
1939 he is with Horace & Lilian Bonnet nee Beckett they married 1919.
Cas