18d, R?????g, Academician put forward, being worthy of respect.
20a, 3words, 2.3.4. O? ??? ?r?l, Moving at a fairly fast pace, or running.
21d, ????r, Tenant not the first to cross the threshold.
24a, A?????r, Umpire given a mouthful between runs?.
22a, 2words, 3.2. L?p ??, Readily believe in return of future monarch?.
23d, ??g?r, Secretary right, say, to pick up message on this.