49 of the top 100 window and door businesses have seen their values decrease by 24 per cent over the last four years, according to Market researcher Plimsoll Publishing.

Plimsoll’s latest 260 page study includes an assessment of each of the 100 companies’ strengths and weaknesses, also offering growth strategies. For those looking to expand their businesses, eight acquisition prospects are named.

‘They have the potential to double in value, if staff costs, debts and other expenses are brought under better control’, says David Pattison, Senior Analyst at Plimsoll.