how to preg replace "£200"

[markjohnson]

If I have a string as such:
$title = "Product Title £143.99"

How can I search the string for £ and then all the subsequent numbers, and then enclose them with a tag?

I was thinking of using preg match, and enclosing the result within whatever tag.

Any ideas?

Thanks

[johanafm]

'#£\d+(\.\d+)*#';

[markjohnson]

Thank you very much!