Six landlords have been banned after their licences were withdrawn and now face criminal prosecution with fines of up to £50,000 if they try to let their properties.

All the bans were in Glovanhill, Glasgow, the area represented by Scottish first minister Nicola Sturgeon.

The area has been dogged by reports of slum homes and exploitative landlords, including landlords continuing to let out properties despite having been struck off.

In some cases, slum landlords in the area are said to have advertised property for rent which they did not own and when it was about to be demolished. Victims paid the deposits and the first month’s rent before losing their money.

In Scotland, all private landlords must be registered.

In the new case, the landlords were found unfit to rent out property by Glasgow City Council’s licensing and regulatory committee.

Five of the landlords failed to provide a range of certification including energy performance and gas safety certificates, and confirmation that tenants received tenant information packs.

There were also concerns relating to the condition of the properties following inspections by council officers.

Hamid Akram, Tauheed Hussain, Mohammed Adnan Hussain, Shakeel Shahid and Simon Tsang own seven properties between them.

The sixth landlord, Johar Mirza, was barred from the register following his conviction for assault with intent to rape and for letting properties that failed to meet the tolerable housing standard.

The bans come after a quarter of tenants in Scotland described their current renting conditions as a “nightmare”.

The proportion is higher than anywhere else in the UK, according to the study by boiler firm Help-Link in partnership with eviction specialist Paul Shamplina.

It shows 23.5% of Scottish tenants unhappy with poor quality housing, ahead of the rest of Britain.

Citizens Advice Scotland received more than 6,000 complaints last year, with evidence of multiple cases of landlords failing to meet their legal responsibilities, refusing to do basic repairs and bullying or intimidating their tenants.