Strip machine
Ecosse
You'll probably finish up with either a Jodel 117 / D120 or maybe a 90 horse PA17 Vagabond. Scotland isn't noted for having plenty of airfields where you can get fuel. A Jodel 117 carries 25 gallons and usually cruises at 95kt, which may be more practical when it comes to fuel stops. The 90 horse Vagabond is a good deal more sprightly than the 65 horse version, but when you combine short strips and obstacles, the extra horses are worth every penny !
Also, as mentioned by WKW, the Rans S6 is worth considering. The S6-116 is 912 powered and fuel-efficient, and has a decent cruise. However, It's an SEP, and not a Microlight.
£15 k will buy you a Jodel, get it spent !
Best of luck.
TTH