Don’t worry about it @Pazza. If this was September and today was January it would be a value of around £750! Markets can be very volatile - but they always have recovered and usually within months. If you find it depressing or worrying it’s best not to look. The news always reports the dips and crashes, but never reports the long term gains. Remember we are all in the same boat. If yours go down, mine will go down too. Perhaps mine will go down more. None of us have lost anything.
Have a read of Bob - the world’s worst investor.