She did not rule out further cash support for the garden, but added that the assembly government still viewed Middleton as a visitor attraction, and not in the same category as the National Museums of Wales.

BBC: NEWS | UK | Wales | Row erupts over botanic garden

During questions from the Commons Communities and Local Government Committee, Mr Boles said this would not remove the need for complying with building regulations and the rule that no more than half of a garden can be used for an extension.

BBC: Home extension deregulation plans 'may go on longer'

It would double the permitted length of extensions to eight metres for detached homes and six metres for others, although it would retain the rule that extensions should not take up more than half the garden.

BBC: Q&A: Housing and planning shake-up