“Whilst the acquiring authority’s reasons for withdrawing the offer seem to us to be sound, we do not however think it would be right for the claimants to have to pay their costs after that date. In our view the authority’s protection on costs exists up until the offer was withdrawn, but thereafter the fact that it was is considered to be a “special reason” to deprive them of their costs from that date.”
“Every offer should state for how long it will remain open for acceptance. An offer which does not state how long it is open for will be assumed to be open for acceptance until the commencement of the hearing to which the offer relates.”