Dear Pasdlm
Well, twas from a St Helenian personal source!
And, yes, whoops, in my fervour I did confuse Mary Slessor's very much earlier voyage with a possibility for Thomas'. Thank you for keeping me on the straight and narrow.
Good news, with regard to Thomas and Edith Aitken's furlough, from the Island of St Helena, to the UK; 'The Transport "Staffordshire" took Pastor Aitken, Mrs Aitken and their three children to England for six months leave on April, 15, 1903.
They returned to Jamestown, St Helena, by the SS "Avondale Castle", arriving on October, 13, 1903.'
As both of Thomas' parents, John and Grace Aitken were still alive during 1903, I feel certain, they would have for some of the furlough, stayed with them, at West Linton, Scotland, and with Thomas' elder sister, Elizabeth Aitken.
At the Aitken household in West Linton at the time, would also have been the children of Thomas' eldest brother, Sir Robert & his wife, Lady Caroline Aitken (of Bombay, India) who were being raised by their paternal grandparents.
i.e.; nephew, John Ellis Aitken, niece Marjorie Grace Aitken and nephew, Robert Gordon Aitken.