Lmo- UK,I Will re-post my last comment with essential modifications:
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1)is the 27 K basic ? i.e there is transportation and relocation allowances per month on top of this?
2)when you say "that includes" you mean the figure or the entire offer in general (i.e 27 K+ free accommodation +schooling assistance, etc... )?
3)What is the educational assistance limit and for how many children?
4)were you born and raised in the UK or only got the UK passport in a later stage?
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Sorry but those details directly affect the offer evaluation....