UK made or Indian made is literally pointless when discussing grips - rubber is rubber regardless of which part of the world it's shaped into a grip (I would argue the same for a piece of willow but lets not debate that one again!)
The key I've found with grips is the thickness, quite a few brands use very thin grips to save on weight. The difference between a thick and thin grip can be over 0.5oz, this may not sound much but by the time a thicker grip, toe guard, scuff sheet etc have been added it can be a good 2/3oz more for a properly finished bat than one with just a thin grip and labels - which leads us into the deadweight Vs pick-up rabbit hole too...