The controller says "Hello Timothy, would you like to go direct Biggin?"
How do you configure your name in the Mode S transponder?
I think it's far more likely that the controller knew you personally and recognised your tail number which is plastered all over the internet. I've had the same sort of "hello" from a Scottish controller earlier this year, and there is another controller in a certain country not far from the UK who send me a funny email every time I fly through his airspace. It's only because they know the tail number from my trip writeups. There is nothing in the Mode S data.