Thanks everyone for giving me the correct address, just a shame it's not still there for me to visit. To clear up a few questions, firstly yes I did know the wife's name was Charlotte and not the incorrectly transcribed Sarabelle. Also Richard Thomas was indeed a miner, starting out in the coal pits of his home county Staffordshire in the 1860's. I believe he came to Liverpool in 1870/1 to work on the rail tunnels being built around that time. By December 1871 the family had moved to the shanty towns on Ingleton Fells to work on the Blea Moor Tunnel which is just north of the Ribblehead Viaduct, also being constructed as part of the Settle to Carlisle line. Their second daughter was born here in the December. It must have been a very harsh life but possibly better paid than coal mining hence his move away from Staffordshire.
In the mid to late 1870's the family worked on tunnels in Derbyshire and Rutland before settling near Chepstow in Wales where the Severn Rail Tunnel was being constructed. By This time, 1890, Richard had become an Engineer's Foreman (Railway Tunnelling) and later acquired some shares in GWR.
I could go on! Their story is fascinating and links with other lines of my family who lived and worked the railway tunnels all over the Uk in the 19th century. One other interesting fact about the Thomas family is their 3rd daughter Louise who was born in Rutland in 1878. In the 1900's she became governess to the de Havilland family, fell in love with and married the eldest son Geoffrey de Havilland who became one of England's earliest aviators and founder of the de Havilland aircraft company. From miner's daughter to Lady de Havilland, an amazing life.
Thanks again for your help and for the links.