Interestingly it depends how you calculate it .....
£13.80 using the GDP deflator
£57.66 using average earnings
£67.06 using per capita GDP
£96.38 using the GDP
These to 2005 only (previous example was to 2006)
Fascinating site. I've always relied on my own indicator in the past based on the number of pints of best bitter per pound (I think it was about 10 back in the early 70s and is now around 0.45 in my neck of the woods). Unfortunately, I can't find the price of a pint in 1902 to test that theory