For some unknown reason the page link isn't working this morning so just type in the Amazon site - Smart Weather Wireless Weather Station with outdoor sensor and you should find it. Its £24.95 delivery free.
You could keep an eye on Lidl's website. They quite often have these as "weekly specials". Some are quite simple and others are very sophisticated. All well priced with 3-year warranty.
Perhap one of these may fit the bill?
http://www.weather-st...o.uk/weather-stations
I had an Oregon one with three sensors some years ago that was very good, they don't seem to do that model any longer though.