ngrr34

I have now got to the bottom of the Lambda issue and the error message has gone. See response from my website provider below:

“It was an error with one of the php extensions loaded on the server. It was causing an error variable to be defined before any code was run which wordpress and other applications caught and displayed”.

Tried suggestions but still no luck in solving this one, but not believed to be malicious.
I have had my web designer and blog supplier look at this but both are baffled.
I was passed this link:

https://wordpress.stackexchange.com/questions/65103/lambda-xx-on-all-wordpress-login-pages

Many thanks for your speedy reply. I will try your suggestions and get back.