Alright, I know that they're the capital of culture and perhaps reports of mysterious and unexplained cash handouts from the Merseyside Development Corporation to any who can photograph illumination flares in the sky needs to be investigated? But lets be honest, any ET is likely to be of infiinately superior intelligence to us having solved the problem of inter-gallatic travel, so I'm struggling to believe they'd be heading off to Knotty Ash myself, but make your own mind up folks.
http://news.bbc.co.uk/1/hi/england/7472310.stm