Tracing Crump Relatives

My mother was Edith Kate Crump, born to John Crump and Jessie in 1905. John was son of John Crump who married Jane Lock in 1847. John Crump died in 1907. The family were then living inn St Thomas Exeter. Kate was taken to Mueller's Orphanage in Bristol. When she left the orphanage she went into domestic service and later met up with an uncle who had changed his name to Walter James, and he paid for her to come to New Zealand to an aunt, Mary Kate Northcott. My mother passed away in 1973. My husband and I are coming to the UK in a couple of weeks and are keen to find any history related to the Crump family.