Fortnum and Mason Royal Blend, milk, no sugar.
Failing that, Tetley's
I'm not sure what to suggest because to me Earl Grey tastes of dish-water, so I don't equate it with strength of flavour.
Try Assam or one of the Breakfast (English or Irish) blends. They'll taste very different to the Earl Grey but they're good strong flavours.
Failing that, Tetley's

Does anybody, by the way, know a blend of tea that's quite stronger then Earl Grey?
I'm not sure what to suggest because to me Earl Grey tastes of dish-water, so I don't equate it with strength of flavour.
Try Assam or one of the Breakfast (English or Irish) blends. They'll taste very different to the Earl Grey but they're good strong flavours.