Developers who want to turn farmland described as “the jewel in Edgware’s crown” into a golf course have been told their application may not comply with London guidelines.

Mayor Boris Johnson told Tony Menai-Davis he would have to make changes to his petition to build an 18-hole course on the 800-year-old Bury Farm before agreeing to it. 

The plans will be sent to Barnet Borough Council’s planning committee for approval - and Mayor Johnson will have a final say in whether it should go ahead.

Under the proposals, farmer Stuart Hunter could lose 100 of the 200 acres of land at the Edgwarebury Lane farm - potentially leaving around 70 horses homeless.

Thousands have now backed a petition launched by the Broadfields’ Estate Residents Association, urging owners All Saints College to think again about re-leasing the land.

The Mayor’s office said in a statement: “The Mayor has now responded to Barnet Council with his initial views regarding this application.

“It is his belief that some aspects of the proposals do not comply with the London Plan and require further clarification.”

Yesterday, GLA member for Barnet Andrew Dismore visited the site with City Hall's environmental committee.

He said: “It’s important we look at biodiversity on the site, because a lot of the animals here could be uprooted.

“The more we look into this, the more problems emerge. We’re all concerned about the impact this will have on the farmland.

“There are reptiles and rare birds here – including black wings – so it’s important we respect that.”

Hendon MP Matthew Offord previously said: “It is as if they are getting rid of the jewels in Edgware’s crown. The farm is the lungs of Edgware.”

Mr Menai-Davis already owns the Shire Golf Club in Barnet, which he said is at full capacity.

Despite this, an independent survey of the 15 largest golf courses in a five mile radius showed all are struggling for members.

He could reached for a comment, but previously told the Times Series he feels those opposed to the plans have “misrepresented” the facts.

He added: “People want to play on top quality courses, which we can offer here. Business at The Shire is fantastic and I know this is a well-wanted, well-needed course.”