Depending on dates, check out the Severn Bore. www.severn-bore.co.uk We watch it a Minsterworth. In May 2013, the bores will not be huge, however, your party of all ages will be safe.
Bring a surfboard!!! and do it before some idiot builds a barrage across the estuary, preventing the bore for good...
Graham (G4FUJ)
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