The small UK family-run business that I've worked for during the past 18 years offers services in topics A, B, C and D. Other staff (and myself) can do all of the services A, B & C but only I can do service "D" which is my speciality. 3 customers use service "D".
There is a non-compete clause in my contract (which unfortunately I have lost) but it is likely to be a "template" (or boiler-plate) clause as this company would never have hired a solicitor to write their contract of employments for them.
I intend to hand in my notice to quit next month, and the customers who use service "D" will be left high and dry, with my current employer unable to get another specialist to replace me. (I know a lot of people feel they are irreplaceable but I really do have very specialist knowledge in this topic).
I'd like to continue service to those customers and carry on providing them with skillset "D" but I'm worried my current employer will come after me for non-compete, even though the company cannot provide "D" without me any more.
Could I defend my position by arguing that since my current employer won't be able to provide skillset "D", I'm only carrying on serving those clients because "there is no other option" for them, and I'll not be competing with my old employer because they won't be able to provide skillset "D" anyway?