​Thanks for posting

I got one similar to this for £8 delivered off ebay, works a treat too

tv aerial. old school

Might be ok in stronger signal areas but it's really only a 5 element aerial in terms of gain although it doesn't state the gain so hard to judge performance, probably fine in a tight fitting spot in the loft where signals are good but probably need a bigger/more elements in lower signal areas.

If you've got the space I'd probably spend a couple pounds more and get something like this
http://www.amazon.co.uk/dp/B0026600CY/ref=pd_lpo_sbs_dp_ss_3?pf_rd_p=569136327&pf_rd_s=lpo-top-stripe&pf_rd_t=201&pf_rd_i=B00I7TUH7C&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_r=0SKZBN74QFX9C7S81SNA
or this
https://www.tlc-direct.co.uk/Products/MXLAB450T.html?source=adwords&kw=&gclid=CjwKEAjwzdGxBRC3rPWZq83FzyUSJAB9IC5iq85XKeKRMrA2z36fNYCaiKTEIamaKcRiS_NfCYDfOhoCDG_w_wcB

Would the 2 mentioned work for a loft mounted Ariel or should I be looking for more specialist Ariel ?
What tools required for a DIY job on Ariel?
Quotes to install are around £100 for the few places I called so far.

20 element aerial, £9.09 delivered from eBay, item number 380910592579.

Exactly same position for me. **** took the aerial on the house I just moved in to (including everything else).

Prefer a loft mounted aerial and the coax cables still here so I'm assuming it's a case of just fitting a new aerial and booster

The Amazon aerial comes with pole and mount and so all you need is longer cable if the supplied 10m isn't long enough. The TLC is a slightly better performer but needs cable, bracket, pole and connector to be added into cost.

They're fairly easy to install if you're ok with basic DIY and working in a loft, look at your neighbour's aerial and note whether their aerial is mounted horizontal or vertical (rods flat or rods up), fix the antenna to a suitable bit of wood high as possible in the loft, with least amount of obstructions such as chimneys etc. If you're in a low signal area then a loft aerial may not be good enough. If you run more than 1 TV you'll need some way to split the cable (using splitters or amp with multi TV outlet)

Should be easy enough, if only 1 TV (1 cable in loft) then replace with a new aerial such as this, if multi cables in loft then it may feed several TV points, if several TV points in house then an amp with multi outlets may be required and that means mains power in the loft is usually required too, but not always, depending on how it was all originally set up.