From
https://www.ygc.co.uk/info/our-fleet
Our powered fleet of tow planes consists of Two Piper Pawnees, and a Eurofox. The addition of the Eurofox has reduced the cost of aerotows substantially, it uses a much smaller amount of fuel per tow. They're also less polluting, so we're doing our bit for the environment too! We are presently upgrading the Eurofox to a more powerful 120bhp engine, and have begun the process of building a second aircraft in the same configuration to allow them to fulfil even more of the overall towing duties.
I wonder if the Eurofox with the 120bhp engine will be as capable as the Pawnee? Sutton Bank operates in high winds, but the elevation is less than 1000 MSL, and with cool weather they have low density altitudes. It also helps that the field is on top of an escarpment similar to Harris Hill. The UK is getting a lot of experience with the Eurofox. I think there is a similar aircraft sold in the USA with an 'American Sounding' name.
Great example of high wind glider operations at Sutton Bank
https://www.youtube.com/watch?v=ZKyaelQmA4U