Often when "tired of instructing" comes up for discussion some non-instructor states that you should "get out". I like many did SEP PPL training for too long but as the market stands there is no where to move to. Would people say to a turbine pilot who wants to move to jet, stop flying until a jet job appears of course not.
When I started flying I wanted to instruct but after a while the hours and pay get to you. I would have stayed instructing if conditions where better but it can get down even the most enthusiastic person. Aviation is cyclic and the reality is only a small percentage of the instructors are there through choice.
Cessnababe- You will get your chance when markets pick up but I bet after one winter of 10 hours flying per month at £12.50 but still being at work 24 days including sat+sun you will be applying to the airlines.