Only if you have a licence to walk on them.
Funny we were discussing this only tonight. Old fogey rights, if you applied before time, out of certain vehicle groups, to retain rights otherwise lost. Means you cannot drive a Forklift, tracked vehicle and a road roller. They are across the board new tests for these. But you could have retained Bus, unloaded of paying passengers or with a number , 6?, nonepaying passingers. Not to be confused with Minibuses. Unloaded locomotives with trailer up to 12 tons. Think its the same with unladen buses to a total of 12 tons. Van and trailer where the load is up to 71/2 ton rules, effectively your in the goods vehicle territory which most folk need another test for. This last one catches out quite a few campervan folk, as well.
I kept up all my rights so other than the three first ones and the HGV classes I can drive the lot. Many micronauts ought to be the same, but only if you claimed your rights at the time.