Laptop keys also typing adjacent characters

Suddenly as of this morning multiple keys on my laptop type their own key but also other characters. It mostly is just additional symbols rather than letters and tends to be the characters next door which they type.

For example:
1) typing 'p' gives 'p['
2) typing '0' gives '0-'
3) typing '-' gives '0-' also
4) typing '.' gives './'
5) typing '/' gives './' also
6) typing ';' gives ';''
7) and vice versa
Also num pad is not working!

So in short it's like a number of adjacent keys have become fused to each other.

I have tested this and it occurs in all programs and windows. On screen keyboard works fine though.

I have so far uninstalled the device driver rebooted and let it reinstall - changed nothing.

Can anybody help?
Thanks
Henry