Is real income the same as present value of income? For example, if I know in time period 2 I will get paid £x in real terms

Where the real interest rate of borrowing and lending is r% between period 1 and 2

Is this the same as being paid £x/(1+r) in period 1?

Or is this the same as being paid £x in period 1?
Real income refers to the income of an individual or group after taking into consideration the effects of inflation on purchasing power. For example, if you receive a 2% salary increase over the previous year and inflation for the year is 1%, then your real income only increases by 1%. Conversely, if you receive a 2% raise in salary and inflation is at 3%, then your real income shrinks by 1%.

Net present value is the value today of a stream of income over time - it is influenced primarily by interest rates.  

There is some relationship between the terms - because they both discuss the value of money in relationship to to time, but real income discusses the difference of buying power over time due to inflation and NPV focusses on the theoretical equivalence of money today versus a stream of money over a period of time - largely influenced by the risk of receiving that income and the available alternatives of investment during the time period.

Investopedia definition of Real Income