A property firm owned by Sir David Murray’s family has expressed confidence in the commercial prospects of its longstanding plans for a big housing development on a former open cast mine site in Lanarkshire after racking up more losses.

The New Brannock business is working on plans to develop land for housing next to its Torrance Park golf club near Newhouse in North Lanarkshire. These have been complicated by planning issues for around 20 years.

The business is owned by Murray Capital, which is chaired by former Rangers owner Sir David. It first applied for planning permission for the site in the 1990s.

Only around 50 houses have been built on the site so far, on land which Taylor Wimpey acquired in return for funding infrastructure.

New Brannock lost £1.6 million in 2015, taking the company’s accumulated deficit to £14.1m.

However Sir David’s son, David D Murray noted North Lanarkshire Council’s Planning Committee recently approved a local development plan, which includes a section of the New Brannock site. The land concerned has potential capacity for 689 housing units.

“This was extremely positive news,” noted Mr Murray.

He added: “As with all large developments of this nature, there is a requirement for significant upfront investment which the Group has made available ... We are pleased with overall progress to date and remain confident of realising the full profitable potential of New Brannock.”

The firm paid £1.4m interest last year on loans from other group companies.