Here's the trademark entry:

...but what the heck is it? Why would they choose such a weird name?
A quick internet search for "big roll" produces various lawn-laying services and a band called Zoot Money's Big Roll, neither of which seem particularly likely candidates for a game.
There was a classic text adventure on the ZX Spectrum called "The Worm In Paradise" but that too seems unlikely to be related to this game. However, if this writer had to lay bets about Big Roll it would be on it being some kind of adventure game (perhaps a new Dirk Dagger episode?). But it could be we will never know as many trademarks are registered for products that never ultimately appear.
