Spelling

Use British English rather than American English, e.g.:

  towards; amid; while

NOT toward; amidst; whilst

Use ‘s’ spellings rather than ‘z’ spellings, e.g.:

  organisation, recognise, specialise

Use ‘yse’ spellings rather than ‘yze’ spellings, e.g.:

  analyse, paralyse

When ‘-ment’ is added to a verb ending in ‘-dge’, the final ‘e’ is retained, e.g.:

  abridgement, acknowledgement, judgement

(exc. in legal context, when ‘judgment’ is used)

‘-ce’ and ‘-se’ endings depend on whether it is a verb or noun in the following:

  practice (noun) / practise (verb); licence (noun) / license (verb)

‘ae’ in middle of words: more technical words retain ‘ae’

  archaeology, haematology

BUT note the now more customary spellings of:

  encyclopedia, medieval