Starplus,
MHL are very good. Very expensive if you take both employment and H&S anything from 1800 - £££££££ endless.
You can write you own staff hand book. Its only needs to be as complicated as you make it.
There is a reasonable place that you can download forms, company hand books and change them to suit your requirements.
They are legal. I have done it in the past and had our company solictor look at them and make any changes required and they would stand up in court. I will send you a link later.
You could use a cheaper out sourced company to manage all of the H&S and contracts, you will still be in the region of £1000 depending on how many staff you have.
Dave