Condor Cycles will do this for you, but it will not be cheap (and their workshop is always booked up several weeks ahead). Why not do it yourself? It is not that hard. It takes time, and can be messy, but there is nothing supernatural about it.
I do everything on all my bikes. Always rather buy the tool and do the job myself...etc.
BUT, this is a skill that I dont think I'd use very often, and given how critical it is, I'd rather not have a crack at it. Thanks for the tip on Condor!
Where should I take tubular wheels to be glued? Preferably east, central is OK.