Ronnie Wood is ''up for'' having another child.

The 67-year-old rocker - who already has eight grandchildren and three grown up kids Jesse, Tyrone and Leah, from past relationships - and his 36-year-old wife Sally Humphreys have been discussing starting a family of their own and the Rolling Stones guitarist thinks having a baby would keep him young.

Asked if she wants to have children of her own, Sally said: ''Yeah, I do. There's no plans but there's no non-plans, if you see what I mean. As time ticks on, I would like children. I don't know if I will but I would like them, and if not then I feel lucky to have little people around me anyway.

''Obviously [Ronnie and I have] spoken about it quite a lot, and you can ask him and his response would be, 'Well, that would be nice.' He's up for it. He's got a lot of friends that are older who have younger children and they all say it's fantastic and it keeps you young. I do think that would be wonderful, but I don't know if it will happen. I hope so.''

Sally admits she ''wishes'' there wasn't such a large age gap between herself and her spouse, but she knew she had to accept the difference if she wanted their relationship to work.

She told the Daily Telegraph newspaper: ''He's on my level completely. He's a very nice and caring person. Oh God, don't use the word 'nice', it's so boring. He's very funny, kind and affectionate and welcoming.

'' I know [the age gap is] there. And I wish it wasn't, but it is. I think I had to say, 'I can't do this because of the age', or I just had to let it go and take it all on board. At no point, years ago, did I say to myself: 'I think I'll go out with someone twice my age', but that is what has happened.''