[drivers99]

I don't think either the UK or US version of sew sound like sue. Audio clips and IPA available at these links:

sew:

http://dictionary.cambridge.org/dictionary/british/sew

UK /səʊ/ US /soʊ/

so:

http://dictionary.cambridge.org/dictionary/british/so

UK /səʊ/ US /soʊ/

sue:

http://dictionary.cambridge.org/dictionary/british/sue

/suː/

"So" and "sew" are homophones in both UK and US English.

[Luc]

Thanks! So I've just been pronouncing it wrong the past 30 years. Eurotrash English :)