LT 30 March 1990. The council (O) compulsorily purchased L`s freehold interest in a site, on which L maintained three advertising panels . The freehold interest had been obtained by L`s predecessor in 1958 and planning permission granted for the boards erection in 1960. The original consent had a limited life but was continued by deemed consent under Control of Advertisements Regulations 1984 . The effect of this transition was that a discontinuance notice could be served by O at anytime. In the early 1980s O began to pursue a policy reducing the number of advertising sites. Notices were served on other sites but an agreement had been reached with L to see if an alternative site could be found. In 1983 the subject site was included in an environmental improvement area and before discussion could take place a cpo was served and confirmed in 1985. L claimed compensation of £73,846 on the basis that use of the site for advertising could have continued indefinitely. L claimed a rental va