The (!) indicator is for the brakes.
Now before I go any further - a P registration may hold some significance to you, or folks in your country, but to the rest of the world - we have no clue - if you say a '95 Swift, I know what you're talking about, a P registration Swift
So - an older model Swift may not have had ABS in which case the (!) light can have three possible meanings ...
1) The handbrake (parking brake, emergency brake) is not fully released
2) The brake fluid is low
3) There is a leak in the brake system.
Although #3 will eventually cause #2 there are two different mechanisms that detect these - the Swifts had diagonal split dual line brakes so that a leak would not cause a complete brake failure, and some vehicles (but not all) have a switch that detects this condition. There is also a float switch on the brake master cylinder that detects a low fluid condition, and a switch under the handbrake lever.
The first thing to check (and also the easiest) is the fluid level.