1525 Wednesday. "congratulations you have won ...." A scam - immediately hang up and ignore them.
This is one of thoses ... "congratulations you have won a holiday!!! press 9 etc" ..... SCAM don't press 9 and hang up or let your Ans Machine get it!!! It looks like it's from overseas. I am a member of TPS...but theres nothing they can do about overseas calls!!
I have received same call today at 9:35 am so looked how to complain on Ofcom website, which directed me to ICO. I had received a similar one for the same number a while back.
Online form is at http://www.ico.gov.uk/ESDWebPages/GenEnq.asp
If enough complain, I'm sure that they'll take action.