I've used Nordic summer myself when I went to Sweden canoeing, very good product. Much nicer than deet based solutions.
This one is also supposed to be very good. Althougn not tried it myself yet. (The only concern is the comment "Wild boar is attracted to the smell and it can therefore be applied to lure them" should be fairly safe in yorkshire though I guess 
)
They also sell tick lasso's, fortunately I've not had to use mine yet. But the dogs had quite a few removed with one over the last few years.
I've no affiliation with this company, just a happy customer. Hope it helps!
