As said its the date on your licence, pretty crap I know, as you could hold you licence for a year before even driving!
I've currently done 5,000 miles, done motorway driving over 1000 miles (at 60-70mph), driven in other UK towns/cities at least another 200 miles, yet i'm still restricted to 50mph when on the island, despite the fact someone can pass, get a licence, leave it sat in their draw for 12months, buy a car and have no R plates.
Is a bit puzzling but its a system designed to weed out the idiots I suppose (which I'd like), however i'd prefer no R plates, the ones who get bollocked by police have to display them (as "retard" punishment), the ones who think its a good idea (the first month warns other people you're still learning) display P plates, *simples*.
However owning a car isn't all its cracked upto be, sure the freedom is nice, but it comes to quite an expense, the car itself, tax, insurance, petrol and maintenance.
I wish i'd waited a year, got a nice car, cheaper insurance and no poxy R plates! (R plates that i've replaced 3 times as they don't peel off very well when i'm across in England and then have to put back on again!).