we (U14) had a visting team from East Midlands two weeks or so ago.
they were adamant that up there all clubs at u14 play 30 minute halves and that short lineouts are not allowed.
Both u13 and u14 are 25 min halves and short lineouts are OK (and at U14 not even uncommon)
We talked abou it in the bar after. They said that clearly the laws were different in different regions, and they thought it was about time everyone got together and agreed these things. They simply wouldn't accept that this has been done - within England - and is laid out in the U19 variations. I almost went and fetched the U19 variations from my kitbag where i have a copy...... but common sense prevailed and we had another pint instead.