Great event and good luck! Just a word of caution – please be aware of nesting birds in scrub – for example, Long-Tailed Tits nest in low bushes and brambles. It’s best to leave these denser tangles of scrub/brambles untouched from March until September (at least) to avoid causing unintentional damage to nesting birds, which may not always be easy to see. Hope you get some good weather for Sunday.
Nature Conservation Lewisham 
Great event and good luck! Just a word of caution – please be aware of nesting birds in scrub – for example, Long-Tailed Tits nest in low bushes and brambles. It’s best to leave these denser tangles of scrub/brambles untouched from March until September (at least) to avoid causing unintentional damage to nesting birds, which may not always be easy to see. Hope you get some good weather for Sunday.