Oh, and I have to mention one lady who does all of my book covers in cross stitch and frames them. Muriel. She's amazing. I just received one for my latest, Love And Dr Devon, actually. It's very sweet of her to do it.

Once I was on a plane and a woman said to me, 'Now, what's the matter with my tomatoes?' And I said, 'Well, it's a bit difficult to see from here.' She took offence and said, 'I was only trying to be friendly.'

Airports - they're not my idea of fun at all. Some of the staff are lovely, but you do always get one or two that seem to forget that it's actually costing you a lot of money to be there and be insulted by their surliness. Times have obviously changed and we need to get used to being more strictly vetted, but they could be more pleasant about it. A smile wouldn't go amiss.

I get nice letters, but really I have no idea. I just try to enthuse people. You've been married for 31 years.

I had the heaviest paper round in Ilkley, West Yorks, and if you look at my shoulders one is still lower than the other. I also did a milk round for a day. It was awful. I was a very surly milkman, because it was very cold, very dark and very early. I am a lark, not an owl, but not in winter when it's chilly. Apart from that I went straight into gardening at 15.

I don't like people being rude. Bad manners and arrogance make me cross. People making others feel uncomfortable. And I really don't like it in restaurants when people are rude or patronising to waiters. I feel like saying, 'They're not your slave'. But my knees only shake around once every five years. You're safe, don't worry.

You hope people won't be tricky or miserable. If you're in public life, it's important not to be. If someone says, 'I like your programme, thank you,' you should be grateful. I am. Why be nasty?