Thames Water has introduced restrictions regarding the use of hose pipes. Further details here: https://www.thameswater.co.uk/help/water-restrictions )
Whilst hoses are permitted on allotments, it is suggested that where possible please water your plot either early morning or in the evening.
Please do not burn rubbish on the allotment site. Besides the risk of the fire spreading during this very dry period, smoke can be a real nuisance to those living in the area, particularly if they have respiratory problems. If you do have an abundance of green waste take it to Redbridge.
This link is to the City Council’s guidelines for burning rubbish and you will see that the OCC’s preference for green waste is to have it composted.