The UK has different minimum wages for different age groups and for those who are classified as "apprentices".
Th numbers below are from the UK.gov website.
The wages are in current, nominal British Pounds Sterling. I highlighted the 2014 rate that took affect this month (October).
For comparison to the US minimum wage of $7.25 here are the conversions in current market exchange rates and in the Purchasing Power Parity (PPP) exchange rate. Go HERE for an excellent explanation of PPP, if you need it.
Economists, in general, prefer the PPP exchange rate because it more accurately measures the actual purchasing power of currencies and is less volitile than the market exchange rates that can flucuate for transient reasons.
Current Market Exchange Rates (1 British Pound Sterling exchanges for $1.61 US dollars).
21 and over: 6.50 Pounds X $1.61 = $10.47
18-20 : 5.13 Pounds X $1.61 = $8.26
Under 18: 3.79 Pounds X $1.61 = $6.10
Apprentice: 2.73 Pouns X $1.61 = $4.40
Purchasing Power Parity (PPP) (1 British Pound Sterling exchanges for $1.36--source OECD)
21 and over: 6.50 Pounds X $1.36 = $8.84
18-20 : 5.13 Pounds X $1.36 = $6.98
Under 18: 3.79 Pounds X $1.36 = $5.15
Apprentice: 2.73 Pounds X $1.36 = $3.71
In either measure, the minimum wage for those over 21 in the UK is higher than the US minimum wage.
However, below that level using PPP the effective minimum wage falls below that of the US. US teens are "better off" in terms of the wage (I am NOT factoring in other benefits or costs that exist--just comparing the absolute wage rate).
When reading media accounts of the differences in Minimum Wages around the world it is important to know if they are reporting in actual exchange rates or in PPP.
As you can see, it makes a BIG difference.
NOTE: Here is a link to an entry I did like this for AUSTRALIA.