Hi helen Sorry in the delay in my reply to you but i wanted to look up a few things before i replied.
First of all, Although not proven I do think that we may be related further back in the Allcroft family tree.
Like mine I am unable to find your Allcroft's in the 1881 but have found them on the 1891 & 1901 and I think that you will find that your Alfred Allcroft married Alice Coats, I think this because on the 1901 census living with Alfred is his brother in law William Coats age 24 and I have found him and Alice on the 1891 with there parent and have found Alfred with his parents
if you need any of this inf. please contact me.
The reason why i think that we are related is that there are very few Allcrofts and they seem to come from the surrounding area;s of Derby, yorkshire and sheffied which are very close to each other