There's a chance that JohnC (who stops by the forum occassionally) might have some Cuitzeos this year. He's got a pair that are a year older than ours.
Greg (in Scotland) looks like he may have some ribbons and checkered later in the year.

From July to October you'll find more around, this time of year it's a case of waiting to see which snakes are gravid and waiting to see if they produce.

I've heard from Alan Francis (*Garter Snake Home Page - Alan Francis) that he may have a few of the brighter species this season.

I keep looking at RFUK (despite having no space for more...) and find it depressing that there are so many royal pythons and so few garters.