Verified answer

1. You can find the value through indexing:

=£10(Price Index Now/Price Index in 1862).

2. There is no continuous index since 1862. Therefore, all the price indices since 1862 will have to be 'chained' *** to get a continuous index till now.

3. You can take the help of the Bank of England(Economic Research Department) or a University(Economics Department). They will be able to help you. May be you can also find the information through internet search.

4. If I am allowed to hazard a guess, the value (purchasing power ) in today's currency may be 500 times or even 1000 times.

-----------------------

***Chain Index:

An index number derived by relating the value at any given period to the value in the previous period rather than to a fixed base.

http://www.answers.com/topic/chain-index

.