Find Ancestors

Hi All I am trying to trace my deceased father's brothers and sisters. I know he had about 6 or 7 of them but only managed to keep in touch with 2 of them. One named Ivy (born in Dudley in 1922)and the other was Gladys (born in leicestershire in 1926) also now deceased, Ivy is now in her 80's and lives in the Dudley area. There could be a brother named George who was a sergeant in the army, many years ago.Also I think 2 of the brothers names were Stanley(born in 1923 in Bromley) and Gerald (born 1928 in Billesden). Dad (whose name was Harry) was born in Woolich around 1925 and was reared in a Dr Barnados orphanage together with the rest of his brothers and sisters in the Coventry area, but there was a big fire at the orphanage when dad was about 8 or 9 and all the records were destroyed in the fire. From there the family were split up and sent to different parts of the country, Dad was moved to the Wrexham area and worked on a farm. Because of the fire he has never managed to trace the rest of the family. I know his mothers name was Dora Skeates and his Fathers name was Hubert, who worked as an engineer fitter with something to do with steam driven road rollers, but sadly that's all i do know. Any help, however small would really be appreciated in trying to trace the rest of his family.I think he also lived in the London area for a while too. Thank you Gary Sly