The UK's indoor skiing centres are year-round, weather-reliable destinations. They are growing in popularity and complexity, with the larger centres now resembling full mountain resorts rather than just straight slopes.

The UK's indoor skiing centres are great places to learn or to brush up on your ski skills before your winter holiday. Many offer great value-for-money courses allowing skiers and snowboarders to maximise their ski time when in the mountains. The freestyle scene at indoor ski slopes is also thriving. There are many online discounts so be sure to book your ski passes and lessons online for the best prices at indoor skiing centres.

OnTheSnow has compiled a list of indoor skiing centres across the UK:

Snozone Milton Keynes & Castelford

The 170-metre-long main slope at Snozone is covered with more than 1500 tonnes of fresh snow and is served by two lifts. There is also a dedicated lesson slope for beginners and to build their skills and confidence before progressing to the main slope. Ski and snowboard lessons are available for all levels, including race training, advanced technique, and freestyle tricks.

Weekly freestyle sessions are held at the Snozone. Original and varied park layouts contain everything from beginner Rookie lines on the academy slide boxes, to technical and gnarly lines.

A wide range of special events are hosted at Snozone, from British Championships to charity fundraisers, race days, and freestyle jams. A juniors' Saturday club offers fun activities such as basic freestyle, race training and lots more. 

Prices: A two-hour slope pass for non-members starts at £22.49 if bought online. A 45-minute private lesson is £39 adults; £39 juniors. There are also adaptive lessons on a private one-to-one basis delivered by Snozone Disability Snowsports. Prices start from £51.99pp. All prices include the complimentary hire of skis, poles, snowboards, boots, and helmets. Snow clothing (jackets and salopettes) are available fore hire at £9.99 per outfit and gloves cost £19.95 to purchase (or any thick, waterproof gloves will do).

Opening hours: Snozone summer slope opening hours (April 30-Oct 20): 10am-10pm (Mon-Fri) and 8am-9pm (Sat-Sun); Snozone winter opening hours (Oct. 20-April 29): 9am-11pm (Mon-Fri) and 7.30am-11pm (Sat-Sun)

Other facilities: Sledging sessions (3 years+); ice sliding (7 years+); and ski riding (15 years+). The bar overlooks the slopes and serves teas, coffees, soft drinks, alcohol as well as hot and cold bar meals 9 a.m. to 9 p.m. The bar provides an exciting entertainment schedule throughout the year with acoustic sessions, comedy, and club nights. 

Snow Factor, Glasgow

Just 10 minutes from Glasgow city centre you'll find the longest indoor real snow slope in the UK. Snow Factor's 200-metre-long main run is served by four ski lifts and is considered a blue level piste with a snow depth of 1.5 metres.

There is also a dedicated lesson slope for beginners and to build their skills and confidence before progressing to the main slope. Ski and snowboard lessons are available for all levels, including race training, advanced technique, and freestyle tricks.

Freestyle sessions are held at Snow Factor Glasgow. Original and varied park layouts contain everything from beginner Rookie lines on the academy slide boxes, to technical and gnarly lines.

A wide range of special events are hosted here, from British Championships to charity fundraisers, race days, and freestyle jams. A juniors' Saturday club offers fun activities such as basic freestyle, race training and lots more.

Prices: Two-hour slope passes for non-members cost £21 adults; £16 juniors. All prices include the complimentary hire of skis, poles, snowboards, boots, and helmets. Snow clothing is available fore hire for £5.50 per outfit and gloves cost £12 to purchase (any thick, waterproof gloves will do).

Opening hours: Snow Factor Glasgow is open 364 days a year. The ski sope is open 10am to 10pm (Mon-Fri) and 9am to 10pm (Sat-Sun). 

Other facilities: An ice climbing wall, Bavarian Restaurant, Festive Grotto, Sledging and Baltic Ice Bar. Sledging sessions and an ice slide (8 years+). The Baltic Ice Bar overlooks the slopes and serves glitter cocktails, bubbly and other alcohol. Blankets are provided, but remember your gloves as it can get cccccold in there! Bar Varia is a family-friendly Bavarian themed restaurant and Bier Halle serving hot and cold bar meals, including gourmet German sausages.

The Snow Centre, Hemel Hempstead

London's "closest indoor real snow slope" is home to a 160-metre-long and 30-metre-wide main slope lined with snow canons and served by four lift systems. Many of you will have seen it on TV as this is where celebrities trained before competiting in CH4's The Jump. The Snow Centre also boasts the largest indoor lesson slope in the UK at 100 metres. 

A whole host of lessons, membership packages, and even professional race training is available at Snow Centre. Freestylers can hit the kickers, rails, and boxes of the terrain park.

Qualified instructors are on hand to train all levels. The Snow Centre was recently awarded ‘centre of excellence' status from the British Association of Snowsports Instructors.

Prices: A two-hour lift pass online starts at 31.20 adults; £25.60 juniors. The price of your lift or lesson pass includes all the equipment needed (skis/snowboard, boots, poles, and helmet) and all of it is provided by the leading ski/snowboard brand, HEAD. Remember to dress in warm, waterproof clothes and gloves. Snow clothes are also available for hire at the centre for £8; gloves £10 and socks £5.

Opening hours: The main slope is open 10sm-4pm (Mon); 7am-10pm (Tues); 10am-10pm (Weds); 10am-10pm (Thurs); 10am-10pm Fris; 8am-8pm (Sat); 8am-8pm (Sun). 

Other facilities: Ride the Ringo Slide for £9.50 for a 30-minute session at weekends. Visit the Schuss Bar for your free tea or coffee. The Lodge Bar & Kitchen overlooks the slope and serves traditional UK and alpine dishes, complete with Sky Sports. The 8000-square-foot Snow+Rock snow sports retailer sells the best winter sports clothing, equipment, and accessories.

SnowDome, Tamworth, UK

Skiing and snowboarding at the SnowDome take place on its 180-metre main slope and at the two Snow Academy areas (separate 30-metre and 25-metre teaching slopes).

There are numerous lessons available at SnowDome: day courses, coaching sessions, and discounts available to all levels of skier and boarder. Kinder Lessons are for children aged between 4 and 7 and last 45 minutes every Saturday and Sunday morning. There's also a disability ski school.

No specialist equipment is required; just bring warm clothes and gloves. Skis, snowboards, snowblades, and boots are provided free of charge or you can bring your own. Protective headwear is also supplied, inclusive, for all skiers and boarders using the ramps or rails. Helmets are also compulsory for all snowboard lessons.

Prices: A two-hour lift pass for non-members starts at £33 online. For ski/snowboard lessons, choose either the 2-hour group lessons, 3-hour fast-track lessons or the Learn to Ski in a Day course.

Opening hours: SnowDome is open 364 days a year: 9am-11pm Mon-Fri; 9am-9pm Sat; 9am-11pm Sun.

Other facilities: Santa's Winter Wonderland (seasonal), A children's snowplay area with snow treehouse, ice skating rink, tubing, sledging, toboganning, a huge gym, swimming pool and luxury spa. The Aspen Good Company serves hearty meals and there's also a Starbucks serving coffees, cakes and snacks. The mountain sports specialists, Ellis Brigham, is also located at the entrance to the SnowDome and has two floors full of clothing and equipment.

Chill Factore, Manchester, UK

Chill Factore is home to the UK's widest indoor ski slope: 100 metres wide and 180 metres in length. To use the Chill Factore main slope all users must be able to control speed and direction, link turns, stop, and use the button lift unassisted.

Chill Factore offers taster sessions for beginners which take place on the 40-metre beginner slope. A wide variety of lessons are also available, as well as the usual beginner or improvement lessons, Chill Factore offers sessions for those wanting to learn parallel turns, carving, moguls, telemark, and freestyle skills with ramps and rails.

Prices: A two-hour lift pass for non-members starts at £20 with the online discount. Skiers must be experienced and meet minimum slope standards. Prices include the hire of boots, helmet, skis/snowboard and poles. Jackets and trousers can be hired spearately and gloves/socks can be purchased separately.

Opening hours: Chill Factore is open for skiing 364 days a year: 10am-6pm Mon, Tues, Thurs, Fri; 7:30am-6pm Weds; 9am-6pm weekends.

Other facilities: Santa's Grotto (seasonal); a 12-metre-high climbing wall offers a challenge for all levels; Mini Moose Land is for children under 4 who can play and hide in the snow; Altitude is a new game featuring ice slides, sledge runs and downhill tubing. For a great selection of shops, bars, cafes and restaurants, check out Alpine Street - an authentic wood and stone indoor mountain village.