I really liked this. I was worried it was going to be too sweet with the marmalade and sugar syrup (and my wife did say it was very sweet) but with a bitter orange marmalade it felt just right, with the bitterness and the lemon balancing the sweetness well. I loved the viscosity the marmalade and sugar syrup gave too.
This will definitely be added to the list of regulars.
I loved it though, an easy drink that at first seems simple and fruity but actually has quite a bit going on.