I have a habit of reverting to "COM" as a benchmark, with regards to some appraisals. If this was in a "COM", I'd see X,XXX potential. In a "DOT CO DOT UK", not so sure. A UK agency for tests? An organisation associated with education, in some shape or form...maybe find some XXX value, if the right UK buyer saw "the use". I don't love it, for me its a little vague. Take offers, see what comes your way