You should always be safe if you get locked out of your house. You might want to warn your neighbours (unless it is 3am) before trying to get back into your home in case they call the police. Look for windows that are partially or completely unlocked. You probably locked your doors before you left, but maybe you forgot your windows. You should be careful and not try this with a small window. It could cause you harm.
You’ll probably ask for help when it is convenient. Is there anyone else with a key to the house? Can the landlord let me in if it’s a rented property? You could try contacting the management office if you live in an apartment complex. When you do need a Locksmith Blackheath, visit https://www.allcitylocksmiths.co.uk/local/blackheath-locksmith/
Call a locksmith if you are unable to reach anyone or you don’t feel confident that you can enter without damaging anything or injuring yourself.
You can use the trick that you see in movies if the door has a spring-bolt and not a solid deadbolt. You should not use your existing bank card, in case it snaps. The card should be wedged between the frame and the door. Hold the card against the frame at the smallest part on the lock. The card should be pushed in, and the knob twisted away. You should be able to open the latch. This is too simple for burglars too though, so if it works get a deadbolt in the future to secure the door.
You can easily gain access to your home by smashing the ground-floor window. It will require you to call a glazier, and wait for them to fix it. You’ll also have to clean up the mess that will be made, and there is a real risk of injury.