1. 'Compared to' = the same, for example 'he was compared to Henry VIII for his extensive number of female partners'; 'compared with' = different, for example '3.6 per cent of people voted for the Communist candidate in 2005, compared with 4.1 per cent in 2010'.
2. Punctuation separates clauses! One must write, 'Within a month of the raid, construction of the ...', rather than, 'Within a month of the raid construction of the ...'. It is unclear to use the latter. (This example comes from the article 'Gananoque'.)
3. Do not write 'the' before the day: 'On the 1 January' should read, 'On 1 January'. There is no need for the 'the' to be present. Ask yourself: 'Why am I writing 'the' before the day, but not 'of' after it?'
4. Do not use '&'. I very much doubt you would write that in any other sort of formal piece, so why do it here?
5. Do not write 'go and', 'try and' etc instead of 'go to', 'try to' etc. There is no justification behind this.
6. 'I need to talk to you' sounds as if one is about to receive a telling-off. 'I need to talk with you' is far preferable, and suggests a conversation rather than a berating.
7. The only time one is able to say 'I was stood', 'She is sat', etc is when another person has placed you somewhere, for example, 'I was sat next to the window on the plane' could be interpreted as 'The airline gave me a seat next to the window'. 'I am stood here, talking to you' is just wrong. The tense one is trying to form is the continuous tense: this requires 'is', 'was', 'will be' etc and a present participle—sitting, standing. Instead of saying that one 'is sat', it is necessary to say that one 'is standing'. It is unlikely that 'I was jumped' would happen to fall from the mouth of a literate person, but misuse of sitting and standing occurs very often.
8. 'For free' is not grammatically acceptable. Prepositions may only be succeeded by nouns. As 'free' is an adjective, it is wrong. Prepositions are used to provide information about relationships: you cannot have a relationship between something and nothing.