Ditto!! JP Licks is fab!!! But my favourite of all time was the old original Steve's in Somerville back in the '70s and early '80s. Oooh, and I mustn't forget Belgian Fudge ice cream in Harvard Square! Aaaah... ice cream memories! 
I think they had Steve's till the late 80's because I vaguely remember going there once. I also remember people talking about Steve's and were gutted that it was gone!!! Do you know where it was? I lived in Somerville for years. (In the 90's)
I think I've seen it before...they certainly were serving it at the Ben & Jerry's festival last year, which means they DO sell it in the UK.
There is no question that it's in the UK, I've had it for years here.
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In the US it's called Strawberry Cheesecake. The Yogurt here though is now called Strawberry Cheesecake. Ohh, I just looked at the main Page that I attached below and they are calling Peace of Cake Ice Cream Strawberry Cheesecake now as well. Strange.
Where do you buy B&J's frozen yogurt?? I've only seen their ice cream at the shops near me.
Sainsbury's and Waitrose. I know they have it at the Blockbuster stores as well. (At least in Guildford they do) Hmm, some of the corner shops as well. They also have it in Chocolate Fudge Brownie and Cherry Garcia, the bottoms of the tubs are blue.
http://www.benjerry.co.uk/ourflavours/?mtklink=lowfatfroyo