Thanks for all the comments and advice. I shall be of to the seedsman hot foot. Sweet rocket it is then. Just hope we get a gap in the rain to get out this weekend.
Good news I have bought some sweet rocket and the seeds were half price Biennials have been the stars of my garden this year.
That's great kate1123 - sounds a really good buy. I do agree about the biennials this year and am thinking of growing some hardy annuals later in the year to overwinter indoors ready to plant out next year - sounds a bit extreme maybe but I have lost so many spring sown annuals this year to slugs and snails but those in the garden which self-seeded last year are doing very well !!