If you plan to cruise at about F100 I would suggest a LARS service from Warton whom will then hand you off to our Tay sector at Scottish who should give you a traffic service......depending on your route I suggest if you stay east of the Scottish TMA Scottish will transfer you to Leuchars before hand off to Dundee. If you require to over fly Edinburgh I would guess they would like you down below min stack level before hitting their airspace so maybe plan on 6000ft by the EDN.
Mind you if you stay at F055 or below you will get a nice friendly Basic Service from myself