It looks to me like 2 separate families?
Edward Bunch married Joyce A Sladden in Thanet Registration District, December qtr 1945
They had 3 children:
Violet J Sladden
September qtr 1940, but re-registered as Violet Bunch September qtr 1952
Raymond C
September qtr 1946
Derek E
September qtr 1947
Harold E Bunch married Lily L P Crawford in Steyning Registration District, December qtr 1934
They appear to have had 7 children:
Peter F
March qtr 1935, Brighton RD
Derek E
June qtr 1936, Hove RD - died same qtr
David G E
September qtr 1937, Hove RD
Ronald E
September qtr 1939, Worthing RD
Keith M
June qtr 1943, Hove RD
Gerald P
June qtr 1944, Worthing RD
Ann
September qtr 1948, Surrey North East RD
Are fathers Harold E and Edward one and the same person?
Was there a divorce?