What the DVLA does

SIR – My sister and her husband run what was the family farm on an island off Scotland. They had a letter from the DVLA informing them that a vehicle registered in their name does not comply with London emissions rules and would not be allowed on the M25.

They found the registration belongs to a 32-year-old tractor, kept as a loader. My brother-in-law is quite disappointed that he can’t go to London on his tractor.

Incidentally, I am still waiting for my driving licence to be renewed (Letters August 20), and am worried as we plan a trip to Spain in October. How can I explain to a car-hire company that I am allowed to drive, but don’t have proof in the form of a driving licence?

John D Frew

Ipswich, Suffolk