The National Allotment Society Lots of very good advice on growing things.
Allotment & Gardens Grow Your Own – Allotment – Gardening Help
Royal Horticulture Society Everything on every plant, good advice on pests too.
Garden Organic How to be Organic.
If you need to contact the police:
Please report any incidents of antisocial behavior, vandalism or intruders on the site to the police as quickly as possible. This helps them build up a real time picture of what is happening when & where on the site which will greatly improve their chances of meeting some of these individuals in person.
To contact the police either call 101 or email them by visiting the Bromley Police website.